./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal.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_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/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_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/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_ac6ce036-9943-4072-a322-bc04daf0f73d/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 46bbe683d8965e9a855fbd780578b958a816bbdd25bc1fa0d6151e1b826f8669 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:19:48,242 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:19:48,314 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:19:48,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:19:48,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:19:48,347 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:19:48,348 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:19:48,348 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:19:48,349 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:19:48,350 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:19:48,351 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:19:48,351 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:19:48,352 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:19:48,352 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:19:48,353 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:19:48,354 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:19:48,354 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:19:48,355 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:19:48,356 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:19:48,356 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:19:48,357 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:19:48,358 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:19:48,359 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:19:48,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:19:48,360 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:19:48,361 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:19:48,361 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:19:48,362 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:19:48,362 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:19:48,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:19:48,363 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:19:48,364 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:19:48,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:19:48,365 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:19:48,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:19:48,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:19:48,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:19:48,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:19:48,367 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:19:48,368 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:19:48,368 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:19:48,369 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:19:48,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:19:48,370 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:19:48,370 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:19:48,370 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:19:48,371 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:19:48,371 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_ac6ce036-9943-4072-a322-bc04daf0f73d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46bbe683d8965e9a855fbd780578b958a816bbdd25bc1fa0d6151e1b826f8669 [2023-11-23 21:19:48,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:19:48,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:19:48,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:19:48,717 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:19:48,717 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:19:48,719 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i [2023-11-23 21:19:51,683 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:19:52,056 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:19:52,060 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i [2023-11-23 21:19:52,087 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire/data/1c8f9d59e/0665aa2c9ab84d33850a5b6805416395/FLAG6035d3b0d [2023-11-23 21:19:52,107 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire/data/1c8f9d59e/0665aa2c9ab84d33850a5b6805416395 [2023-11-23 21:19:52,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:19:52,117 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:19:52,120 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:19:52,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:19:52,129 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:19:52,132 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:19:52" (1/1) ... [2023-11-23 21:19:52,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3488f2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:52, skipping insertion in model container [2023-11-23 21:19:52,134 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:19:52" (1/1) ... [2023-11-23 21:19:52,197 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:19:52,623 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_ac6ce036-9943-4072-a322-bc04daf0f73d/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i[24361,24374] [2023-11-23 21:19:52,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:19:52,650 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:19:52,737 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_ac6ce036-9943-4072-a322-bc04daf0f73d/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i[24361,24374] [2023-11-23 21:19:52,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:19:52,781 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:19:52,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:52 WrapperNode [2023-11-23 21:19:52,781 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:19:52,783 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:19:52,783 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:19:52,783 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:19:52,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:52" (1/1) ... [2023-11-23 21:19:52,833 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:52" (1/1) ... [2023-11-23 21:19:52,866 INFO L138 Inliner]: procedures = 127, calls = 38, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 116 [2023-11-23 21:19:52,867 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:19:52,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:19:52,868 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:19:52,868 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:19:52,880 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:52" (1/1) ... [2023-11-23 21:19:52,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:52" (1/1) ... [2023-11-23 21:19:52,886 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:52" (1/1) ... [2023-11-23 21:19:52,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:52" (1/1) ... [2023-11-23 21:19:52,912 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:52" (1/1) ... [2023-11-23 21:19:52,924 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:52" (1/1) ... [2023-11-23 21:19:52,926 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:52" (1/1) ... [2023-11-23 21:19:52,929 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:52" (1/1) ... [2023-11-23 21:19:52,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:19:52,944 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:19:52,945 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:19:52,945 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:19:52,946 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:52" (1/1) ... [2023-11-23 21:19:52,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:19:52,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:53,007 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:19:53,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:19:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-11-23 21:19:53,058 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-11-23 21:19:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:19:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:19:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:19:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:19:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:19:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:19:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:19:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:19:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:19:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:19:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:19:53,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:19:53,264 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:19:53,267 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:19:53,326 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-11-23 21:19:53,620 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:19:53,782 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:19:53,782 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 21:19:53,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:19:53 BoogieIcfgContainer [2023-11-23 21:19:53,784 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:19:53,790 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:19:53,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:19:53,794 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:19:53,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:19:52" (1/3) ... [2023-11-23 21:19:53,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b31c670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:19:53, skipping insertion in model container [2023-11-23 21:19:53,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:52" (2/3) ... [2023-11-23 21:19:53,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b31c670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:19:53, skipping insertion in model container [2023-11-23 21:19:53,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:19:53" (3/3) ... [2023-11-23 21:19:53,800 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_equal.i [2023-11-23 21:19:53,821 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:19:53,822 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:19:53,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:19:53,888 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;@74dca24b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:19:53,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:19:53,896 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 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 21:19:53,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:19:53,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:53,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:53,907 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:19:53,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:53,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1801499726, now seen corresponding path program 1 times [2023-11-23 21:19:53,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:53,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334670938] [2023-11-23 21:19:53,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:53,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:54,403 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 21:19:54,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:54,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334670938] [2023-11-23 21:19:54,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334670938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:54,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:54,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:19:54,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605264254] [2023-11-23 21:19:54,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:54,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:19:54,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:54,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:19:54,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:54,455 INFO L87 Difference]: Start difference. First operand has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 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) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-11-23 21:19:54,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:54,575 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2023-11-23 21:19:54,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:19:54,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2023-11-23 21:19:54,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:54,585 INFO L225 Difference]: With dead ends: 35 [2023-11-23 21:19:54,585 INFO L226 Difference]: Without dead ends: 14 [2023-11-23 21:19:54,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:19:54,593 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 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 21:19:54,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:19:54,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-23 21:19:54,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2023-11-23 21:19:54,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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) [2023-11-23 21:19:54,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-11-23 21:19:54,629 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 7 [2023-11-23 21:19:54,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:54,630 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-11-23 21:19:54,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-11-23 21:19:54,630 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-11-23 21:19:54,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 21:19:54,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:54,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:54,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:19:54,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:19:54,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:54,633 INFO L85 PathProgramCache]: Analyzing trace with hash -131545487, now seen corresponding path program 1 times [2023-11-23 21:19:54,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:54,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261492782] [2023-11-23 21:19:54,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:54,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:19:54,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:54,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261492782] [2023-11-23 21:19:54,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261492782] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:19:54,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221170309] [2023-11-23 21:19:54,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:54,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:54,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:54,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:54,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:19:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:55,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:19:55,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:55,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:19:55,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:19:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:19:55,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221170309] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:19:55,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1513763080] [2023-11-23 21:19:55,193 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-23 21:19:55,193 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:19:55,198 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:19:55,203 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:19:55,205 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:19:56,761 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:02,458 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '145#(and (<= (+ |ULTIMATE.start_node_create_#res#1.base| 1) |#StackHeapBarrier|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|) 1)) (exists ((|v_#valid_36| (Array Int Int))) (and (= |#valid| (store |v_#valid_36| |ULTIMATE.start_node_create_#res#1.base| 1)) (= (select |v_#valid_36| |ULTIMATE.start_node_create_#res#1.base|) 0))) (= |ULTIMATE.start_main_~temp~2#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4))) (= |ULTIMATE.start_node_create_#res#1.offset| 0) (= |ULTIMATE.start_main_~count~0#1| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) 0) |ULTIMATE.start_main_~ptr~0#1.offset|) (exists ((|v_#memory_int_51| (Array Int (Array Int Int))) (|v_#memory_int_52| (Array Int (Array Int Int))) (|v_#memory_int_97| (Array Int (Array Int Int))) (|v_#memory_int_53| (Array Int (Array Int Int))) (|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_25| Int) (|v_#memory_int_49| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_80| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_46| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_48| (Array Int (Array Int Int))) (|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_16| Int) (|v_#memory_$Pointer$.offset_46| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_48| (Array Int (Array Int Int))) (|v_ULTIMATE.start_dll_prepend_#t~mem10#1.base_16| Int) (|v_#memory_$Pointer$.base_80| (Array Int (Array Int Int))) (|v_ULTIMATE.start_dll_prepend_#t~mem10#1.base_25| Int)) (and (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_46| |ULTIMATE.start_main_~#s~0#1.base| (store (select |v_#memory_$Pointer$.base_46| |ULTIMATE.start_main_~#s~0#1.base|) 0 |ULTIMATE.start_node_create_#res#1.base|))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_46| |ULTIMATE.start_main_~#s~0#1.base| (store (select |v_#memory_$Pointer$.offset_46| |ULTIMATE.start_main_~#s~0#1.base|) 0 0))) (= (store |v_#memory_$Pointer$.base_80| |ULTIMATE.start_node_create_#res#1.base| (store (store (store (select |v_#memory_$Pointer$.base_80| |ULTIMATE.start_node_create_#res#1.base|) 4 0) 8 0) 0 (select (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base|) 0))) |v_#memory_$Pointer$.base_48|) (or (and (= (store |v_#memory_int_53| (select (select (store |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) |ULTIMATE.start_main_~#s~0#1.base|) 0) (store (select |v_#memory_int_53| (select (select (store |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) |ULTIMATE.start_main_~#s~0#1.base|) 0)) (+ (select (select (store |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) |ULTIMATE.start_main_~#s~0#1.base|) 0) 8) (select (select |v_#memory_int_49| (select (select (store |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) |ULTIMATE.start_main_~#s~0#1.base|) 0)) (+ (select (select (store |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) |ULTIMATE.start_main_~#s~0#1.base|) 0) 8)))) |v_#memory_int_49|) (= |v_#memory_$Pointer$.base_46| (store (store |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) (select (select (store |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) |ULTIMATE.start_main_~#s~0#1.base|) 0) (store (select (store |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) (select (select (store |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) |ULTIMATE.start_main_~#s~0#1.base|) 0)) (+ (select (select (store |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) |ULTIMATE.start_main_~#s~0#1.base|) 0) 8) |ULTIMATE.start_node_create_#res#1.base|))) (or (not (= (select (select (store |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) |ULTIMATE.start_main_~#s~0#1.base|) 0) 0)) (not (= (select (select (store |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) |ULTIMATE.start_main_~#s~0#1.base|) 0) 0))) (= (store (store |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) (select (select (store |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) |ULTIMATE.start_main_~#s~0#1.base|) 0) (store (select (store |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) (select (select (store |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) |ULTIMATE.start_main_~#s~0#1.base|) 0)) (+ (select (select (store |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) |ULTIMATE.start_main_~#s~0#1.base|) 0) 8) 0)) |v_#memory_$Pointer$.offset_46|)) (and (= (select (select (store |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) |ULTIMATE.start_main_~#s~0#1.base|) 0) 0) (= (select (select (store |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) |ULTIMATE.start_main_~#s~0#1.base|) 0) 0) (= (store |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.base_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) |v_#memory_$Pointer$.base_46|) (= |v_#memory_int_49| |v_#memory_int_53|) (= |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_25| |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_16|) (= |v_ULTIMATE.start_dll_prepend_#t~mem10#1.base_25| |v_ULTIMATE.start_dll_prepend_#t~mem10#1.base_16|) (= (store |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_main_~#s~0#1.base|) 0))) |v_#memory_$Pointer$.offset_46|))) (= |v_#memory_int_53| (store |v_#memory_int_51| |ULTIMATE.start_node_create_#res#1.base| (store (store (select |v_#memory_int_51| |ULTIMATE.start_node_create_#res#1.base|) 0 1) 4 (select (select |v_#memory_int_53| |ULTIMATE.start_node_create_#res#1.base|) 4)))) (= |#memory_int| (store |v_#memory_int_49| |ULTIMATE.start_main_~#s~0#1.base| (store (select |v_#memory_int_49| |ULTIMATE.start_main_~#s~0#1.base|) 0 (select (select |#memory_int| |ULTIMATE.start_main_~#s~0#1.base|) 0)))) (= |v_#memory_int_52| (store |v_#memory_int_97| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_int_97| |ULTIMATE.start_node_create_#res#1.base|) 4 (select (select |v_#memory_int_52| |ULTIMATE.start_node_create_#res#1.base|) 4)))) (= |v_#memory_$Pointer$.offset_48| (store |v_#memory_$Pointer$.offset_80| |ULTIMATE.start_node_create_#res#1.base| (store (store (store (select |v_#memory_$Pointer$.offset_80| |ULTIMATE.start_node_create_#res#1.base|) 4 0) 8 0) 0 (select (select |v_#memory_$Pointer$.offset_48| |ULTIMATE.start_node_create_#res#1.base|) 0)))) (= (select (select |v_#memory_$Pointer$.offset_80| |ULTIMATE.start_main_~#s~0#1.base|) 0) 0) (= |v_#memory_int_51| (store |v_#memory_int_52| |ULTIMATE.start_node_create_#res#1.base| (store (select |v_#memory_int_52| |ULTIMATE.start_node_create_#res#1.base|) 8 (select (select |v_#memory_int_51| |ULTIMATE.start_node_create_#res#1.base|) 8)))) (= |ULTIMATE.start_dll_create_#res#1.base| (select (select |v_#memory_$Pointer$.base_80| |ULTIMATE.start_main_~#s~0#1.base|) 0)))) (= |ULTIMATE.start_main_~data~0#1| 1) (exists ((|v_#length_26| (Array Int Int))) (= |#length| (store |v_#length_26| |ULTIMATE.start_node_create_#res#1.base| 12))) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |ULTIMATE.start_dll_create_#res#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4)) |ULTIMATE.start_main_~temp~2#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) 0) |ULTIMATE.start_main_~ptr~0#1.base|) (<= 2 |ULTIMATE.start_main_~#s~0#1.base|))' at error location [2023-11-23 21:20:02,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:02,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:20:02,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-11-23 21:20:02,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138802192] [2023-11-23 21:20:02,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:02,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:20:02,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:02,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:20:02,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:20:02,464 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 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) [2023-11-23 21:20:02,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:02,587 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2023-11-23 21:20:02,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:20:02,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 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 10 [2023-11-23 21:20:02,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:02,588 INFO L225 Difference]: With dead ends: 22 [2023-11-23 21:20:02,588 INFO L226 Difference]: Without dead ends: 15 [2023-11-23 21:20:02,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:20:02,590 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:02,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 27 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:02,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-23 21:20:02,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-23 21:20:02,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 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) [2023-11-23 21:20:02,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-11-23 21:20:02,596 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2023-11-23 21:20:02,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:02,596 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-11-23 21:20:02,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 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) [2023-11-23 21:20:02,597 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-23 21:20:02,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 21:20:02,598 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:02,598 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:02,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:02,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:02,801 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:20:02,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:02,802 INFO L85 PathProgramCache]: Analyzing trace with hash -559981202, now seen corresponding path program 2 times [2023-11-23 21:20:02,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:02,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026616373] [2023-11-23 21:20:02,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:02,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:04,272 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:20:04,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:04,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026616373] [2023-11-23 21:20:04,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026616373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:04,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:04,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:20:04,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068388769] [2023-11-23 21:20:04,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:04,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:20:04,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:04,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:20:04,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:20:04,286 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 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) [2023-11-23 21:20:04,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:04,627 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2023-11-23 21:20:04,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:20:04,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 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 [2023-11-23 21:20:04,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:04,629 INFO L225 Difference]: With dead ends: 22 [2023-11-23 21:20:04,630 INFO L226 Difference]: Without dead ends: 20 [2023-11-23 21:20:04,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:20:04,631 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 19 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:04,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 15 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:20:04,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-23 21:20:04,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2023-11-23 21:20:04,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 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) [2023-11-23 21:20:04,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2023-11-23 21:20:04,640 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 13 [2023-11-23 21:20:04,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:04,640 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2023-11-23 21:20:04,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 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) [2023-11-23 21:20:04,641 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-23 21:20:04,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 21:20:04,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:04,642 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:04,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:20:04,642 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:20:04,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:04,643 INFO L85 PathProgramCache]: Analyzing trace with hash -559933865, now seen corresponding path program 1 times [2023-11-23 21:20:04,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:04,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157958644] [2023-11-23 21:20:04,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:04,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:04,931 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 21:20:04,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:04,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157958644] [2023-11-23 21:20:04,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157958644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:04,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:04,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:20:04,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182208873] [2023-11-23 21:20:04,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:04,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:20:04,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:04,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:20:04,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:20:04,942 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-23 21:20:05,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:05,036 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2023-11-23 21:20:05,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:20:05,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 [2023-11-23 21:20:05,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:05,038 INFO L225 Difference]: With dead ends: 20 [2023-11-23 21:20:05,038 INFO L226 Difference]: Without dead ends: 17 [2023-11-23 21:20:05,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 21:20:05,039 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:05,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 17 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:05,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-23 21:20:05,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-23 21:20:05,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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) [2023-11-23 21:20:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-11-23 21:20:05,045 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2023-11-23 21:20:05,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:05,045 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-11-23 21:20:05,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-23 21:20:05,046 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-11-23 21:20:05,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:20:05,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:05,047 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:05,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:20:05,048 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:20:05,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:05,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1270988247, now seen corresponding path program 1 times [2023-11-23 21:20:05,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:05,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386198502] [2023-11-23 21:20:05,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:05,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:06,945 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:06,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:06,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386198502] [2023-11-23 21:20:06,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386198502] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:20:06,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069863501] [2023-11-23 21:20:06,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:06,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:06,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:06,949 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:06,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6ce036-9943-4072-a322-bc04daf0f73d/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:20:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:07,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 92 conjunts are in the unsatisfiable core [2023-11-23 21:20:07,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:07,173 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 21:20:07,230 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-23 21:20:07,230 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 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-23 21:20:07,392 INFO L349 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2023-11-23 21:20:07,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2023-11-23 21:20:07,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-23 21:20:07,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-23 21:20:07,583 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 38 treesize of output 22 [2023-11-23 21:20:07,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2023-11-23 21:20:07,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:07,760 INFO L349 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2023-11-23 21:20:07,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 25 [2023-11-23 21:20:07,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:07,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:08,039 INFO L349 Elim1Store]: treesize reduction 146, result has 8.8 percent of original size [2023-11-23 21:20:08,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 319 treesize of output 389 [2023-11-23 21:20:08,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:08,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:08,103 INFO L349 Elim1Store]: treesize reduction 46, result has 23.3 percent of original size [2023-11-23 21:20:08,104 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 175 treesize of output 190 [2023-11-23 21:20:08,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:08,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 116 [2023-11-23 21:20:08,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 33 treesize of output 31 [2023-11-23 21:20:08,188 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 25 treesize of output 27 [2023-11-23 21:20:08,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:08,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 144 [2023-11-23 21:20:08,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:08,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:08,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:08,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:08,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:08,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 34 [2023-11-23 21:20:08,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2023-11-23 21:20:08,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:08,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:09,032 INFO L349 Elim1Store]: treesize reduction 520, result has 7.0 percent of original size [2023-11-23 21:20:09,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 13 case distinctions, treesize of input 879 treesize of output 877 [2023-11-23 21:20:09,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:09,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 39 [2023-11-23 21:20:09,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:09,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:09,988 INFO L349 Elim1Store]: treesize reduction 133, result has 30.0 percent of original size [2023-11-23 21:20:09,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 486 treesize of output 490 [2023-11-23 21:20:13,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:13,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:13,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:13,180 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:20:13,182 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:20:13,186 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 66 treesize of output 21 [2023-11-23 21:20:13,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:13,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:13,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:13,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 295 treesize of output 268 [2023-11-23 21:20:13,247 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 224 treesize of output 222 [2023-11-23 21:20:13,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:13,407 INFO L349 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2023-11-23 21:20:13,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 29 [2023-11-23 21:20:13,421 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 9 treesize of output 7 [2023-11-23 21:20:13,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:13,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:13,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:13,494 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:20:13,496 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:20:13,500 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 57 treesize of output 16 [2023-11-23 21:20:13,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:13,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:13,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:13,520 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:20:13,522 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:20:13,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 10 [2023-11-23 21:20:13,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:13,676 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-11-23 21:20:13,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 16 [2023-11-23 21:20:13,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:13,718 INFO L349 Elim1Store]: treesize reduction 53, result has 1.9 percent of original size [2023-11-23 21:20:13,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 316 treesize of output 279 [2023-11-23 21:20:13,731 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 235 treesize of output 238 [2023-11-23 21:20:13,933 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 9 treesize of output 7 [2023-11-23 21:20:13,955 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 9 treesize of output 7 [2023-11-23 21:20:14,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:14,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:14,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:14,018 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:20:14,020 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:20:14,028 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 60 treesize of output 19 [2023-11-23 21:20:14,036 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 [2023-11-23 21:20:14,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 1246 treesize of output 1136 [2023-11-23 21:20:15,553 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:20:15,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 12 [2023-11-23 21:20:15,662 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:20:15,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 12 [2023-11-23 21:20:15,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 12 [2023-11-23 21:20:15,971 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:20:15,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 12 [2023-11-23 21:20:16,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 12 [2023-11-23 21:20:16,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 12 [2023-11-23 21:20:16,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2023-11-23 21:20:16,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2023-11-23 21:20:16,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2023-11-23 21:20:17,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 463 treesize of output 456 [2023-11-23 21:20:17,221 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 22 treesize of output 7 [2023-11-23 21:20:17,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:20:21,113 INFO L349 Elim1Store]: treesize reduction 1878, result has 13.2 percent of original size [2023-11-23 21:20:21,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 11 new quantified variables, introduced 39 case distinctions, treesize of input 2032 treesize of output 2505