./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX --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 52fc70d7844651686a4c27e057f507f0498e7d5f7c17f07a035699d1630f6ea2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:01:44,146 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:01:44,262 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 01:01:44,270 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:01:44,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:01:44,308 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:01:44,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:01:44,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:01:44,311 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:01:44,316 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:01:44,316 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:01:44,317 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:01:44,318 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:01:44,319 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:01:44,320 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:01:44,320 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:01:44,321 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:01:44,321 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:01:44,322 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:01:44,322 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:01:44,324 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:01:44,325 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:01:44,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:01:44,326 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 01:01:44,327 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:01:44,327 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:01:44,328 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:01:44,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:01:44,329 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 01:01:44,329 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:01:44,331 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 01:01:44,331 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:01:44,331 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 01:01:44,331 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:01:44,332 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:01:44,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:01:44,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:01:44,333 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:01:44,333 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:01:44,334 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 01:01:44,334 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:01:44,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:01:44,335 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 01:01:44,335 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:01:44,336 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:01:44,336 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_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52fc70d7844651686a4c27e057f507f0498e7d5f7c17f07a035699d1630f6ea2 [2023-11-12 01:01:44,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:01:44,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:01:44,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:01:44,757 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:01:44,757 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:01:44,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/forester-heap/dll-reverse.i [2023-11-12 01:01:47,852 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:01:48,124 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:01:48,125 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/sv-benchmarks/c/forester-heap/dll-reverse.i [2023-11-12 01:01:48,140 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/data/3b771635e/0732fd03dbc542e6bcb6a4db1894e01d/FLAG66d697b2c [2023-11-12 01:01:48,156 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/data/3b771635e/0732fd03dbc542e6bcb6a4db1894e01d [2023-11-12 01:01:48,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:01:48,161 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:01:48,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:01:48,163 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:01:48,169 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:01:48,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:01:48" (1/1) ... [2023-11-12 01:01:48,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a8cd374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:48, skipping insertion in model container [2023-11-12 01:01:48,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:01:48" (1/1) ... [2023-11-12 01:01:48,217 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:01:48,496 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_3449ba90-5675-41be-ad00-a694a8cdd109/sv-benchmarks/c/forester-heap/dll-reverse.i[22309,22322] [2023-11-12 01:01:48,503 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_3449ba90-5675-41be-ad00-a694a8cdd109/sv-benchmarks/c/forester-heap/dll-reverse.i[22394,22407] [2023-11-12 01:01:48,524 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_3449ba90-5675-41be-ad00-a694a8cdd109/sv-benchmarks/c/forester-heap/dll-reverse.i[22924,22937] [2023-11-12 01:01:48,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:01:48,545 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:01:48,595 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_3449ba90-5675-41be-ad00-a694a8cdd109/sv-benchmarks/c/forester-heap/dll-reverse.i[22309,22322] [2023-11-12 01:01:48,597 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_3449ba90-5675-41be-ad00-a694a8cdd109/sv-benchmarks/c/forester-heap/dll-reverse.i[22394,22407] [2023-11-12 01:01:48,602 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_3449ba90-5675-41be-ad00-a694a8cdd109/sv-benchmarks/c/forester-heap/dll-reverse.i[22924,22937] [2023-11-12 01:01:48,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:01:48,642 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:01:48,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:48 WrapperNode [2023-11-12 01:01:48,642 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:01:48,644 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:01:48,644 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:01:48,644 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:01:48,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:48" (1/1) ... [2023-11-12 01:01:48,694 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:48" (1/1) ... [2023-11-12 01:01:48,720 INFO L138 Inliner]: procedures = 119, calls = 41, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 147 [2023-11-12 01:01:48,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:01:48,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:01:48,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:01:48,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:01:48,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:48" (1/1) ... [2023-11-12 01:01:48,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:48" (1/1) ... [2023-11-12 01:01:48,735 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:48" (1/1) ... [2023-11-12 01:01:48,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:48" (1/1) ... [2023-11-12 01:01:48,746 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:48" (1/1) ... [2023-11-12 01:01:48,752 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:48" (1/1) ... [2023-11-12 01:01:48,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:48" (1/1) ... [2023-11-12 01:01:48,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:48" (1/1) ... [2023-11-12 01:01:48,760 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:01:48,761 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:01:48,761 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:01:48,761 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:01:48,762 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:48" (1/1) ... [2023-11-12 01:01:48,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:01:48,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:01:48,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:01:48,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:01:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 01:01:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 01:01:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 01:01:48,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:01:48,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 01:01:48,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 01:01:48,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 01:01:48,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:01:48,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:01:48,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:01:49,110 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:01:49,112 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:01:49,506 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:01:49,608 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:01:49,611 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-12 01:01:49,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:01:49 BoogieIcfgContainer [2023-11-12 01:01:49,615 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:01:49,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:01:49,618 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:01:49,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:01:49,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:01:48" (1/3) ... [2023-11-12 01:01:49,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130477e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:01:49, skipping insertion in model container [2023-11-12 01:01:49,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:48" (2/3) ... [2023-11-12 01:01:49,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130477e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:01:49, skipping insertion in model container [2023-11-12 01:01:49,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:01:49" (3/3) ... [2023-11-12 01:01:49,628 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-reverse.i [2023-11-12 01:01:49,648 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:01:49,648 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-12 01:01:49,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:01:49,720 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;@1cb4a364, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:01:49,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-12 01:01:49,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:01:49,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 01:01:49,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:49,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 01:01:49,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:01:49,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:49,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1014884411, now seen corresponding path program 1 times [2023-11-12 01:01:49,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:49,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35092976] [2023-11-12 01:01:49,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:49,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:01:49,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:01:49,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35092976] [2023-11-12 01:01:49,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35092976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:01:49,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:01:49,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:01:49,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002514056] [2023-11-12 01:01:49,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:01:49,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 01:01:49,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:01:50,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 01:01:50,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 01:01:50,014 INFO L87 Difference]: Start difference. First operand has 25 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-11-12 01:01:50,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:50,141 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2023-11-12 01:01:50,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 01:01:50,144 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2023-11-12 01:01:50,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:50,152 INFO L225 Difference]: With dead ends: 47 [2023-11-12 01:01:50,152 INFO L226 Difference]: Without dead ends: 23 [2023-11-12 01:01:50,155 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 [2023-11-12 01:01:50,159 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:50,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:01:50,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-12 01:01:50,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-12 01:01:50,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.3) internal successors, (26), 22 states have internal predecessors, (26), 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) [2023-11-12 01:01:50,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-11-12 01:01:50,195 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 6 [2023-11-12 01:01:50,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:50,196 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-11-12 01:01:50,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-11-12 01:01:50,196 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-11-12 01:01:50,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 01:01:50,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:50,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:01:50,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 01:01:50,198 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:01:50,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:50,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1773969138, now seen corresponding path program 1 times [2023-11-12 01:01:50,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:50,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429282009] [2023-11-12 01:01:50,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:50,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:01:50,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:01:50,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429282009] [2023-11-12 01:01:50,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429282009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:01:50,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:01:50,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:01:50,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042444195] [2023-11-12 01:01:50,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:01:50,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 01:01:50,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:01:50,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 01:01:50,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:01:50,693 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-12 01:01:51,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:51,003 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2023-11-12 01:01:51,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 01:01:51,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2023-11-12 01:01:51,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:51,004 INFO L225 Difference]: With dead ends: 52 [2023-11-12 01:01:51,004 INFO L226 Difference]: Without dead ends: 33 [2023-11-12 01:01:51,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 01:01:51,006 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 17 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:51,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 55 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 01:01:51,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-12 01:01:51,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2023-11-12 01:01:51,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.28) internal successors, (32), 27 states have internal predecessors, (32), 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) [2023-11-12 01:01:51,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-11-12 01:01:51,026 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 8 [2023-11-12 01:01:51,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:51,027 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-11-12 01:01:51,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-12 01:01:51,027 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-11-12 01:01:51,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 01:01:51,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:51,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:01:51,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 01:01:51,029 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:01:51,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:51,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1773970388, now seen corresponding path program 1 times [2023-11-12 01:01:51,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:51,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567028026] [2023-11-12 01:01:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:51,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:51,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:01:51,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:01:51,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567028026] [2023-11-12 01:01:51,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567028026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:01:51,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:01:51,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:01:51,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293497858] [2023-11-12 01:01:51,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:01:51,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:01:51,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:01:51,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:01:51,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:01:51,127 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-12 01:01:51,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:51,286 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2023-11-12 01:01:51,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:01:51,287 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), 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 8 [2023-11-12 01:01:51,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:51,287 INFO L225 Difference]: With dead ends: 47 [2023-11-12 01:01:51,288 INFO L226 Difference]: Without dead ends: 37 [2023-11-12 01:01:51,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:01:51,289 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 33 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:51,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 28 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:01:51,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-12 01:01:51,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2023-11-12 01:01:51,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:01:51,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2023-11-12 01:01:51,298 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 8 [2023-11-12 01:01:51,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:51,298 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2023-11-12 01:01:51,298 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), 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) [2023-11-12 01:01:51,299 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2023-11-12 01:01:51,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 01:01:51,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:51,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:01:51,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 01:01:51,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:01:51,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:51,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1654140644, now seen corresponding path program 1 times [2023-11-12 01:01:51,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:51,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316833332] [2023-11-12 01:01:51,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:51,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:52,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:01:52,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:01:52,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316833332] [2023-11-12 01:01:52,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316833332] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:01:52,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390389890] [2023-11-12 01:01:52,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:52,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:01:52,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:01:52,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:01:52,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 01:01:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:52,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-12 01:01:52,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:01:52,391 INFO L351 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 21 treesize of output 15 [2023-11-12 01:01:52,407 INFO L351 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 25 treesize of output 7 [2023-11-12 01:01:52,421 INFO L351 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 [2023-11-12 01:01:52,947 INFO L351 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 115 [2023-11-12 01:01:52,989 INFO L322 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2023-11-12 01:01:52,990 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 257 treesize of output 244 [2023-11-12 01:01:53,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 01:01:53,027 INFO L351 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 37 treesize of output 29 [2023-11-12 01:01:53,034 INFO L322 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-11-12 01:01:53,034 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 5 [2023-11-12 01:01:53,044 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-12 01:01:53,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 01:01:53,054 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-12 01:01:53,097 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 104 [2023-11-12 01:01:53,117 INFO L322 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2023-11-12 01:01:53,118 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 226 treesize of output 210 [2023-11-12 01:01:53,147 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-12 01:01:53,211 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 247 treesize of output 147 [2023-11-12 01:01:53,243 INFO L322 Elim1Store]: treesize reduction 101, result has 1.0 percent of original size [2023-11-12 01:01:53,243 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 325 treesize of output 281 [2023-11-12 01:01:53,271 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 01:01:53,276 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-12 01:01:53,292 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 236 treesize of output 136 [2023-11-12 01:01:53,318 INFO L322 Elim1Store]: treesize reduction 101, result has 1.0 percent of original size [2023-11-12 01:01:53,318 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 306 treesize of output 268 [2023-11-12 01:01:53,342 INFO L351 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 151 treesize of output 109 [2023-11-12 01:01:53,382 INFO L351 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 247 treesize of output 147 [2023-11-12 01:01:53,412 INFO L351 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 158 [2023-11-12 01:01:53,432 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 01:01:53,433 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 01:01:53,437 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-12 01:01:53,458 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-12 01:01:53,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:01:53,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:01:53,735 INFO L322 Elim1Store]: treesize reduction 14, result has 69.6 percent of original size [2023-11-12 01:01:53,736 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 268 treesize of output 309 [2023-11-12 01:01:54,023 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse2 (select .cse0 |c_ULTIMATE.start_main_~x~0#1.offset|))) (let ((.cse3 (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) 0)) (.cse4 (= .cse2 0)) (.cse1 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 8))) (and (or (forall ((v_ArrVal_199 Int) (v_DerPreprocessor_18 (Array Int Int))) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse0 .cse1 v_ArrVal_199)) .cse2 v_DerPreprocessor_18) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) (and .cse3 .cse4)) (or (not .cse3) (not .cse4) (and (forall ((|v_ULTIMATE.start_main_#t~malloc11#1.base_30| Int) (v_ArrVal_199 Int) (v_DerPreprocessor_15 Int) (v_DerPreprocessor_16 (Array Int Int)) (v_ArrVal_196 (Array Int Int)) (v_DerPreprocessor_17 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse0 .cse1 v_ArrVal_199) |c_ULTIMATE.start_main_~x~0#1.offset| |v_ULTIMATE.start_main_#t~malloc11#1.base_30|)))) (let ((.cse5 (store (store .cse6 |v_ULTIMATE.start_main_#t~malloc11#1.base_30| v_DerPreprocessor_16) v_DerPreprocessor_15 v_DerPreprocessor_17))) (let ((.cse7 (select .cse5 |v_ULTIMATE.start_main_#t~malloc11#1.base_30|))) (or (not (= (select (select .cse5 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0)) (not (= v_DerPreprocessor_15 (select (select (store .cse6 |v_ULTIMATE.start_main_#t~malloc11#1.base_30| .cse7) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (not (= .cse7 v_DerPreprocessor_16)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc11#1.base_30|) 0)) (= (select (select (store .cse6 |v_ULTIMATE.start_main_#t~malloc11#1.base_30| v_ArrVal_196) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) |v_ULTIMATE.start_main_#t~malloc11#1.base_30|) (= |v_ULTIMATE.start_main_#t~malloc11#1.base_30| 0)))))) (forall ((|v_ULTIMATE.start_main_#t~malloc11#1.base_30| Int) (v_ArrVal_199 Int) (v_ArrVal_196 (Array Int Int)) (v_DerPreprocessor_14 (Array Int Int))) (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse0 .cse1 v_ArrVal_199) |c_ULTIMATE.start_main_~x~0#1.offset| |v_ULTIMATE.start_main_#t~malloc11#1.base_30|)))) (let ((.cse9 (select (select (store .cse8 |v_ULTIMATE.start_main_#t~malloc11#1.base_30| v_ArrVal_196) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (or (not (= (select (select (store .cse8 .cse9 v_DerPreprocessor_14) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc11#1.base_30|) 0)) (= |v_ULTIMATE.start_main_#t~malloc11#1.base_30| 0) (not (= .cse9 |v_ULTIMATE.start_main_#t~malloc11#1.base_30|)))))))))))) is different from false [2023-11-12 01:01:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:01:54,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390389890] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:01:54,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2088932111] [2023-11-12 01:01:54,869 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-12 01:01:54,870 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:01:54,873 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:01:54,879 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:01:54,879 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 01:02:00,562 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 01:02:01,394 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '439#(and (= 2 (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ 8 |ULTIMATE.start_main_~x~0#1.offset|))) (= |ULTIMATE.start_main_~head~0#1.offset| |ULTIMATE.start_main_~x~0#1.offset|) (= 2 |ULTIMATE.start_main_~t1~0#1|) (= |ULTIMATE.start_main_~x~0#1.base| |ULTIMATE.start_main_~head~0#1.base|) (= |ULTIMATE.start_main_~head~0#1.offset| |ULTIMATE.start_main_~prev~0#1.offset|) (= |ULTIMATE.start_main_~prev~0#1.base| |ULTIMATE.start_main_~head~0#1.base|) (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) 8)) |ULTIMATE.start_main_~t2~0#1|) (not (= |ULTIMATE.start_main_~t2~0#1| 1)) (or (not (= |ULTIMATE.start_main_~x~0#1.base| 0)) (not (= |ULTIMATE.start_main_~x~0#1.offset| 0))))' at error location [2023-11-12 01:02:01,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 01:02:01,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 01:02:01,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-12 01:02:01,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394821562] [2023-11-12 01:02:01,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 01:02:01,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 01:02:01,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:01,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 01:02:01,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=179, Unknown=1, NotChecked=28, Total=272 [2023-11-12 01:02:01,398 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:05,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:05,928 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2023-11-12 01:02:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 01:02:05,932 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-12 01:02:05,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:05,933 INFO L225 Difference]: With dead ends: 66 [2023-11-12 01:02:05,933 INFO L226 Difference]: Without dead ends: 60 [2023-11-12 01:02:05,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=98, Invalid=284, Unknown=2, NotChecked=36, Total=420 [2023-11-12 01:02:05,934 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 30 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 9 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:05,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 121 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 101 Invalid, 6 Unknown, 41 Unchecked, 3.9s Time] [2023-11-12 01:02:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-12 01:02:05,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 42. [2023-11-12 01:02:05,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:05,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2023-11-12 01:02:05,950 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 14 [2023-11-12 01:02:05,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:05,950 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2023-11-12 01:02:05,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:05,951 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2023-11-12 01:02:05,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 01:02:05,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:05,952 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:02:05,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 01:02:06,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:02:06,158 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:02:06,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:06,159 INFO L85 PathProgramCache]: Analyzing trace with hash 186699056, now seen corresponding path program 2 times [2023-11-12 01:02:06,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:06,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673458034] [2023-11-12 01:02:06,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:06,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:02:07,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:07,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673458034] [2023-11-12 01:02:07,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673458034] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:02:07,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943298446] [2023-11-12 01:02:07,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 01:02:07,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:02:07,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:02:07,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:02:07,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3449ba90-5675-41be-ad00-a694a8cdd109/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 01:02:08,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-12 01:02:08,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 01:02:08,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-12 01:02:08,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:02:08,125 INFO L351 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 25 treesize of output 7 [2023-11-12 01:02:08,131 INFO L351 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 [2023-11-12 01:02:08,139 INFO L351 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 21 treesize of output 15 [2023-11-12 01:02:08,570 INFO L322 Elim1Store]: treesize reduction 61, result has 24.7 percent of original size [2023-11-12 01:02:08,571 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 233 treesize of output 267 [2023-11-12 01:02:08,675 INFO L322 Elim1Store]: treesize reduction 85, result has 16.7 percent of original size [2023-11-12 01:02:08,676 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 275 treesize of output 311 [2023-11-12 01:02:08,710 INFO L351 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 231 treesize of output 229 [2023-11-12 01:02:08,771 INFO L322 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-12 01:02:08,771 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 229 treesize of output 257 [2023-11-12 01:02:08,837 INFO L351 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 206 treesize of output 204 [2023-11-12 01:02:08,916 INFO L351 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 14 treesize of output 9 [2023-11-12 01:02:08,972 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 17 [2023-11-12 01:02:09,012 INFO L322 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-12 01:02:09,013 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-12 01:02:09,034 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-12 01:02:09,035 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 7 [2023-11-12 01:02:09,067 INFO L351 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 18 treesize of output 3 [2023-11-12 01:02:09,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 01:02:09,113 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-12 01:02:09,119 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-12 01:02:09,125 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-12 01:02:09,134 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-12 01:02:09,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 01:02:09,150 INFO L351 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 26 treesize of output 1 [2023-11-12 01:02:09,249 INFO L351 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 30 treesize of output 11 [2023-11-12 01:02:09,258 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 69 [2023-11-12 01:02:09,264 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2023-11-12 01:02:09,276 INFO L351 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 18 treesize of output 12 [2023-11-12 01:02:09,319 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2023-11-12 01:02:09,330 INFO L351 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 26 treesize of output 1 [2023-11-12 01:02:09,334 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-12 01:02:09,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:02:09,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:02:09,491 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_373 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_373) |c_ULTIMATE.start_main_~prev~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~prev~0#1.offset|)) 1)) is different from false [2023-11-12 01:02:09,699 INFO L322 Elim1Store]: treesize reduction 12, result has 76.9 percent of original size [2023-11-12 01:02:09,700 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 240 treesize of output 273 [2023-11-12 01:02:09,788 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 01:02:09,789 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 23 [2023-11-12 01:02:10,096 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-12 01:02:10,096 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 1 [2023-11-12 01:02:10,254 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-11-12 01:02:10,664 INFO L322 Elim1Store]: treesize reduction 230, result has 44.4 percent of original size [2023-11-12 01:02:10,665 INFO L351 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 4 new quantified variables, introduced 7 case distinctions, treesize of input 387 treesize of output 686 [2023-11-12 01:02:10,985 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-11-12 01:02:12,729 INFO L322 Elim1Store]: treesize reduction 615, result has 5.5 percent of original size [2023-11-12 01:02:12,729 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 263 treesize of output 239 [2023-11-12 01:02:12,870 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-11-12 01:02:13,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 01:02:13,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 01:02:15,174 INFO L322 Elim1Store]: treesize reduction 1137, result has 36.0 percent of original size [2023-11-12 01:02:15,175 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 23 case distinctions, treesize of input 20196 treesize of output 15323