./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_967d7a0e-facf-415b-80f4-f60d4daf4aeb/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967d7a0e-facf-415b-80f4-f60d4daf4aeb/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967d7a0e-facf-415b-80f4-f60d4daf4aeb/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967d7a0e-facf-415b-80f4-f60d4daf4aeb/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967d7a0e-facf-415b-80f4-f60d4daf4aeb/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967d7a0e-facf-415b-80f4-f60d4daf4aeb/bin/utaipan-verify-SwPr7d2a91 --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 1b81f923e96224472f8219a473f794261ff02356a47c6b09b527f0fc600725a8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:18:09,049 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:18:09,176 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967d7a0e-facf-415b-80f4-f60d4daf4aeb/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:18:09,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:18:09,185 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:18:09,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:18:09,234 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:18:09,235 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:18:09,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:18:09,242 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:18:09,242 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:18:09,244 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:18:09,244 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:18:09,246 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:18:09,247 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:18:09,247 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:18:09,248 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:18:09,248 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:18:09,249 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:18:09,249 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:18:09,250 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:18:09,250 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:18:09,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:18:09,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:18:09,253 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:18:09,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:18:09,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:18:09,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:18:09,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:18:09,255 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:18:09,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:18:09,257 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:18:09,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:18:09,257 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:18:09,258 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:18:09,258 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:18:09,258 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:18:09,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:18:09,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:18:09,259 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:18:09,259 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:18:09,260 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:18:09,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:18:09,260 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:18:09,261 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:18:09,261 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:18:09,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:18:09,262 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_967d7a0e-facf-415b-80f4-f60d4daf4aeb/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967d7a0e-facf-415b-80f4-f60d4daf4aeb/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b81f923e96224472f8219a473f794261ff02356a47c6b09b527f0fc600725a8 [2023-11-24 23:18:09,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:18:09,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:18:09,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:18:09,683 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:18:09,683 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:18:09,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967d7a0e-facf-415b-80f4-f60d4daf4aeb/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/list-simple/dll2c_insert_unequal.i [2023-11-24 23:18:12,954 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:18:13,281 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:18:13,281 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967d7a0e-facf-415b-80f4-f60d4daf4aeb/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i [2023-11-24 23:18:13,301 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967d7a0e-facf-415b-80f4-f60d4daf4aeb/bin/utaipan-verify-SwPr7d2a91/data/d83e24bb3/230a95f51d2641d8951b5d44f13c7d66/FLAGd52def36f [2023-11-24 23:18:13,328 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967d7a0e-facf-415b-80f4-f60d4daf4aeb/bin/utaipan-verify-SwPr7d2a91/data/d83e24bb3/230a95f51d2641d8951b5d44f13c7d66 [2023-11-24 23:18:13,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:18:13,335 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:18:13,341 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:18:13,341 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:18:13,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:18:13,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:18:13" (1/1) ... [2023-11-24 23:18:13,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@759a95e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:13, skipping insertion in model container [2023-11-24 23:18:13,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:18:13" (1/1) ... [2023-11-24 23:18:13,431 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:18:13,892 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_967d7a0e-facf-415b-80f4-f60d4daf4aeb/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i[25148,25161] [2023-11-24 23:18:13,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:18:13,917 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:18:14,018 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_967d7a0e-facf-415b-80f4-f60d4daf4aeb/sv-benchmarks/c/list-simple/dll2c_insert_unequal.i[25148,25161] [2023-11-24 23:18:14,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:18:14,070 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:18:14,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:14 WrapperNode [2023-11-24 23:18:14,071 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:18:14,073 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:18:14,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:18:14,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:18:14,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:14" (1/1) ... [2023-11-24 23:18:14,101 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:14" (1/1) ... [2023-11-24 23:18:14,135 INFO L138 Inliner]: procedures = 127, calls = 58, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 187 [2023-11-24 23:18:14,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:18:14,136 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:18:14,136 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:18:14,137 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:18:14,147 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:14" (1/1) ... [2023-11-24 23:18:14,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:14" (1/1) ... [2023-11-24 23:18:14,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:14" (1/1) ... [2023-11-24 23:18:14,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:14" (1/1) ... [2023-11-24 23:18:14,167 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:14" (1/1) ... [2023-11-24 23:18:14,172 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:14" (1/1) ... [2023-11-24 23:18:14,174 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:14" (1/1) ... [2023-11-24 23:18:14,177 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:14" (1/1) ... [2023-11-24 23:18:14,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:18:14,183 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:18:14,183 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:18:14,183 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:18:14,184 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:14" (1/1) ... [2023-11-24 23:18:14,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:18:14,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967d7a0e-facf-415b-80f4-f60d4daf4aeb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:18:14,223 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967d7a0e-facf-415b-80f4-f60d4daf4aeb/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:18:14,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967d7a0e-facf-415b-80f4-f60d4daf4aeb/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:18:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:18:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:18:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2023-11-24 23:18:14,269 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2023-11-24 23:18:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:18:14,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:18:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:18:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:18:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:18:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:18:14,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:18:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:18:14,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:18:14,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:18:14,428 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:18:14,430 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:18:14,779 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:18:15,024 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:18:15,024 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-24 23:18:15,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:18:15 BoogieIcfgContainer [2023-11-24 23:18:15,026 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:18:15,031 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:18:15,032 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:18:15,036 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:18:15,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:18:13" (1/3) ... [2023-11-24 23:18:15,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea4a284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:18:15, skipping insertion in model container [2023-11-24 23:18:15,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:14" (2/3) ... [2023-11-24 23:18:15,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea4a284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:18:15, skipping insertion in model container [2023-11-24 23:18:15,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:18:15" (3/3) ... [2023-11-24 23:18:15,044 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_insert_unequal.i [2023-11-24 23:18:15,066 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:18:15,066 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:18:15,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:18:15,127 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;@16c97e88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:18:15,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:18:15,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:18:15,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 23:18:15,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:18:15,144 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:18:15,145 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:18:15,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:18:15,152 INFO L85 PathProgramCache]: Analyzing trace with hash -170983099, now seen corresponding path program 1 times [2023-11-24 23:18:15,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:18:15,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859376741] [2023-11-24 23:18:15,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:18:15,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:18:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:18:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:18:15,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:18:15,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859376741] [2023-11-24 23:18:15,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859376741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:18:15,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:18:15,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:18:15,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637877653] [2023-11-24 23:18:15,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:18:15,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:18:15,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:18:15,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:18:15,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:18:15,921 INFO L87 Difference]: Start difference. First operand has 29 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:18:16,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:18:16,243 INFO L93 Difference]: Finished difference Result 53 states and 79 transitions. [2023-11-24 23:18:16,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:18:16,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-11-24 23:18:16,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:18:16,252 INFO L225 Difference]: With dead ends: 53 [2023-11-24 23:18:16,252 INFO L226 Difference]: Without dead ends: 24 [2023-11-24 23:18:16,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:18:16,262 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:18:16,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 57 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:18:16,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-24 23:18:16,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-24 23:18:16,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:18:16,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2023-11-24 23:18:16,325 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 16 [2023-11-24 23:18:16,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:18:16,327 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2023-11-24 23:18:16,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:18:16,327 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2023-11-24 23:18:16,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-24 23:18:16,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:18:16,329 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:18:16,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:18:16,330 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:18:16,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:18:16,330 INFO L85 PathProgramCache]: Analyzing trace with hash 299889229, now seen corresponding path program 1 times [2023-11-24 23:18:16,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:18:16,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520079348] [2023-11-24 23:18:16,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:18:16,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:18:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:18:16,792 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-24 23:18:16,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:18:16,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520079348] [2023-11-24 23:18:16,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520079348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:18:16,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:18:16,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:18:16,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830412497] [2023-11-24 23:18:16,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:18:16,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:18:16,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:18:16,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:18:16,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:18:16,797 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 23:18:17,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:18:17,301 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2023-11-24 23:18:17,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:18:17,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2023-11-24 23:18:17,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:18:17,302 INFO L225 Difference]: With dead ends: 36 [2023-11-24 23:18:17,303 INFO L226 Difference]: Without dead ends: 25 [2023-11-24 23:18:17,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:18:17,305 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 20 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:18:17,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 46 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:18:17,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-24 23:18:17,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-24 23:18:17,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:18:17,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2023-11-24 23:18:17,313 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 22 [2023-11-24 23:18:17,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:18:17,313 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2023-11-24 23:18:17,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 23:18:17,313 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2023-11-24 23:18:17,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-24 23:18:17,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:18:17,315 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:18:17,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:18:17,315 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:18:17,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:18:17,316 INFO L85 PathProgramCache]: Analyzing trace with hash 593391176, now seen corresponding path program 1 times [2023-11-24 23:18:17,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:18:17,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477666097] [2023-11-24 23:18:17,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:18:17,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:18:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:18:25,988 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:18:25,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:18:25,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477666097] [2023-11-24 23:18:25,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477666097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:18:25,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237201261] [2023-11-24 23:18:25,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:18:25,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:18:25,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967d7a0e-facf-415b-80f4-f60d4daf4aeb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:18:25,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967d7a0e-facf-415b-80f4-f60d4daf4aeb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:18:26,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_967d7a0e-facf-415b-80f4-f60d4daf4aeb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:18:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:18:27,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 133 conjunts are in the unsatisfiable core [2023-11-24 23:18:27,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:18:27,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 23:18:27,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-24 23:18:27,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 23:18:28,139 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-24 23:18:28,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-24 23:18:28,325 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2023-11-24 23:18:28,341 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 16 treesize of output 11 [2023-11-24 23:18:28,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:18:28,389 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-24 23:18:28,398 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 16 treesize of output 11 [2023-11-24 23:18:28,605 INFO L349 Elim1Store]: treesize reduction 54, result has 16.9 percent of original size [2023-11-24 23:18:28,606 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 208 treesize of output 164 [2023-11-24 23:18:28,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:18:28,622 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 44 treesize of output 33 [2023-11-24 23:18:28,635 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 26 treesize of output 15 [2023-11-24 23:18:28,654 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 111 treesize of output 95 [2023-11-24 23:18:28,987 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-24 23:18:28,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 232 treesize of output 132 [2023-11-24 23:18:28,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-24 23:18:29,006 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 38 treesize of output 28 [2023-11-24 23:18:29,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2023-11-24 23:18:29,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-11-24 23:18:29,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 23:18:29,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:18:29,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 23:18:29,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:18:29,286 INFO L349 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2023-11-24 23:18:29,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 240 treesize of output 147 [2023-11-24 23:18:29,329 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-24 23:18:29,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2023-11-24 23:18:29,377 INFO L349 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-11-24 23:18:29,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2023-11-24 23:18:30,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:18:30,340 INFO L349 Elim1Store]: treesize reduction 106, result has 4.5 percent of original size [2023-11-24 23:18:30,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 238 treesize of output 142 [2023-11-24 23:18:30,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 77 [2023-11-24 23:18:30,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:18:30,375 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2023-11-24 23:18:30,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:18:30,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:18:30,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:18:30,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:18:30,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:18:30,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:18:30,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-24 23:18:30,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 11 [2023-11-24 23:18:30,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-11-24 23:18:30,609 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:18:30,609 INFO L327 TraceCheckSpWp]: Computing backward predicates...