./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/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_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/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_04f1181f-9754-4337-8cff-9e55f08f61b7/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 751e67420c89b9d0e6d5639ea75482b8ab104ec2c6d8190aacf202ff4b3b3104 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:48:46,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:48:46,169 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:48:46,178 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:48:46,181 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:48:46,218 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:48:46,219 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:48:46,220 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:48:46,221 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:48:46,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:48:46,227 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:48:46,227 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:48:46,228 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:48:46,230 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:48:46,230 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:48:46,240 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:48:46,241 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:48:46,242 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:48:46,242 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:48:46,244 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:48:46,244 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:48:46,245 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:48:46,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:48:46,247 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:48:46,247 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:48:46,248 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:48:46,248 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:48:46,249 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:48:46,249 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:48:46,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:48:46,251 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:48:46,251 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:48:46,252 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:48:46,252 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:48:46,252 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:48:46,253 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:48:46,253 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:48:46,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:48:46,254 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:48:46,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:48:46,255 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:48:46,255 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:48:46,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:48:46,256 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:48:46,257 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:48:46,257 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:48:46,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:48:46,257 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_04f1181f-9754-4337-8cff-9e55f08f61b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 751e67420c89b9d0e6d5639ea75482b8ab104ec2c6d8190aacf202ff4b3b3104 [2023-11-24 23:48:46,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:48:46,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:48:46,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:48:46,595 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:48:46,595 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:48:46,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i [2023-11-24 23:48:49,682 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:48:49,926 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:48:49,927 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i [2023-11-24 23:48:49,933 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/data/1d16d91a8/3831f6b2aa424614a3834241a5cd5f9f/FLAGbf9fee0b3 [2023-11-24 23:48:49,946 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/data/1d16d91a8/3831f6b2aa424614a3834241a5cd5f9f [2023-11-24 23:48:49,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:48:49,950 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:48:49,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:48:49,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:48:49,957 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:48:49,958 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:48:49" (1/1) ... [2023-11-24 23:48:49,959 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a4f41cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:49, skipping insertion in model container [2023-11-24 23:48:49,960 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:48:49" (1/1) ... [2023-11-24 23:48:49,986 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:48:50,152 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_04f1181f-9754-4337-8cff-9e55f08f61b7/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i[832,845] [2023-11-24 23:48:50,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:48:50,192 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:48:50,208 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_04f1181f-9754-4337-8cff-9e55f08f61b7/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i[832,845] [2023-11-24 23:48:50,224 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:48:50,242 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:48:50,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:50 WrapperNode [2023-11-24 23:48:50,243 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:48:50,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:48:50,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:48:50,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:48:50,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:50" (1/1) ... [2023-11-24 23:48:50,258 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:50" (1/1) ... [2023-11-24 23:48:50,286 INFO L138 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 138 [2023-11-24 23:48:50,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:48:50,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:48:50,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:48:50,287 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:48:50,296 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:50" (1/1) ... [2023-11-24 23:48:50,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:50" (1/1) ... [2023-11-24 23:48:50,300 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:50" (1/1) ... [2023-11-24 23:48:50,300 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:50" (1/1) ... [2023-11-24 23:48:50,307 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:50" (1/1) ... [2023-11-24 23:48:50,312 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:50" (1/1) ... [2023-11-24 23:48:50,314 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:50" (1/1) ... [2023-11-24 23:48:50,315 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:50" (1/1) ... [2023-11-24 23:48:50,319 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:48:50,320 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:48:50,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:48:50,320 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:48:50,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:50" (1/1) ... [2023-11-24 23:48:50,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:48:50,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:48:50,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:48:50,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:48:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:48:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:48:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:48:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:48:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:48:50,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:48:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:48:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:48:50,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:48:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:48:50,491 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:48:50,493 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:48:50,718 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:48:50,885 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:48:50,885 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-24 23:48:50,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:48:50 BoogieIcfgContainer [2023-11-24 23:48:50,888 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:48:50,891 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:48:50,892 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:48:50,897 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:48:50,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:48:49" (1/3) ... [2023-11-24 23:48:50,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1d4635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:48:50, skipping insertion in model container [2023-11-24 23:48:50,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:50" (2/3) ... [2023-11-24 23:48:50,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1d4635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:48:50, skipping insertion in model container [2023-11-24 23:48:50,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:48:50" (3/3) ... [2023-11-24 23:48:50,901 INFO L112 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_ground-2.i [2023-11-24 23:48:50,921 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:48:50,921 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:48:50,983 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:48:51,012 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;@3eaea716, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:48:51,013 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:48:51,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 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 23:48:51,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:48:51,023 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:48:51,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:48:51,024 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:48:51,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:48:51,029 INFO L85 PathProgramCache]: Analyzing trace with hash -917584139, now seen corresponding path program 1 times [2023-11-24 23:48:51,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:48:51,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263443857] [2023-11-24 23:48:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:48:51,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:48:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:48:51,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:48:51,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:48:51,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263443857] [2023-11-24 23:48:51,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263443857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:48:51,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:48:51,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:48:51,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888171116] [2023-11-24 23:48:51,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:48:51,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:48:51,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:48:51,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:48:51,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:48:51,364 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 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) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:48:51,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:48:51,510 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2023-11-24 23:48:51,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:48:51,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-24 23:48:51,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:48:51,522 INFO L225 Difference]: With dead ends: 56 [2023-11-24 23:48:51,522 INFO L226 Difference]: Without dead ends: 35 [2023-11-24 23:48:51,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:48:51,530 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:48:51,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 25 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:48:51,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-24 23:48:51,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 22. [2023-11-24 23:48:51,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 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 23:48:51,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2023-11-24 23:48:51,577 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 8 [2023-11-24 23:48:51,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:48:51,577 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2023-11-24 23:48:51,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:48:51,578 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2023-11-24 23:48:51,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:48:51,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:48:51,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:48:51,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:48:51,579 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:48:51,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:48:51,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1778615702, now seen corresponding path program 1 times [2023-11-24 23:48:51,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:48:51,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684660244] [2023-11-24 23:48:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:48:51,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:48:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:48:51,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:48:51,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:48:51,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684660244] [2023-11-24 23:48:51,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684660244] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:48:51,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990378994] [2023-11-24 23:48:51,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:48:51,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:48:51,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:48:51,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:48:51,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:48:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:48:51,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:48:51,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:48:51,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:48:51,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:48:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:48:51,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990378994] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:48:51,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1718342520] [2023-11-24 23:48:51,934 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:48:51,934 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:48:51,940 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:48:51,946 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:48:51,948 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:48:52,293 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:48:52,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1718342520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:48:52,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:48:52,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3, 3] total 8 [2023-11-24 23:48:52,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142407624] [2023-11-24 23:48:52,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:48:52,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:48:52,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:48:52,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:48:52,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:48:52,343 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:48:52,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:48:52,400 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2023-11-24 23:48:52,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:48:52,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-24 23:48:52,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:48:52,401 INFO L225 Difference]: With dead ends: 43 [2023-11-24 23:48:52,402 INFO L226 Difference]: Without dead ends: 23 [2023-11-24 23:48:52,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:48:52,404 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:48:52,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 29 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:48:52,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-24 23:48:52,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2023-11-24 23:48:52,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:48:52,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2023-11-24 23:48:52,411 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 9 [2023-11-24 23:48:52,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:48:52,412 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-11-24 23:48:52,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:48:52,412 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2023-11-24 23:48:52,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:48:52,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:48:52,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:48:52,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:48:52,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:48:52,619 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:48:52,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:48:52,620 INFO L85 PathProgramCache]: Analyzing trace with hash 523252138, now seen corresponding path program 1 times [2023-11-24 23:48:52,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:48:52,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635546550] [2023-11-24 23:48:52,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:48:52,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:48:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:48:52,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:48:52,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:48:52,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635546550] [2023-11-24 23:48:52,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635546550] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:48:52,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589528796] [2023-11-24 23:48:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:48:52,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:48:52,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:48:52,752 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:48:52,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:48:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:48:52,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:48:52,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:48:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:48:52,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:48:52,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589528796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:48:52,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:48:52,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-24 23:48:52,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192011240] [2023-11-24 23:48:52,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:48:52,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:48:52,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:48:52,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:48:52,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:48:52,844 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:48:52,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:48:52,885 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2023-11-24 23:48:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:48:52,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-24 23:48:52,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:48:52,887 INFO L225 Difference]: With dead ends: 39 [2023-11-24 23:48:52,887 INFO L226 Difference]: Without dead ends: 24 [2023-11-24 23:48:52,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:48:52,889 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:48:52,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 22 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:48:52,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-24 23:48:52,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2023-11-24 23:48:52,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:48:52,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-11-24 23:48:52,895 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 15 [2023-11-24 23:48:52,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:48:52,896 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-11-24 23:48:52,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:48:52,896 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-11-24 23:48:52,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 23:48:52,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:48:52,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:48:52,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:48:53,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:48:53,098 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:48:53,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:48:53,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1766431364, now seen corresponding path program 1 times [2023-11-24 23:48:53,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:48:53,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787819984] [2023-11-24 23:48:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:48:53,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:48:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:48:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:48:53,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:48:53,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787819984] [2023-11-24 23:48:53,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787819984] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:48:53,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941665220] [2023-11-24 23:48:53,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:48:53,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:48:53,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:48:53,251 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:48:53,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:48:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:48:53,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:48:53,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:48:53,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:48:53,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:48:53,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:48:53,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941665220] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:48:53,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [808942741] [2023-11-24 23:48:53,400 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-24 23:48:53,400 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:48:53,401 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:48:53,401 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:48:53,401 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:48:54,060 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:48:54,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [808942741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:48:54,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:48:54,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 12 [2023-11-24 23:48:54,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985682174] [2023-11-24 23:48:54,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:48:54,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:48:54,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:48:54,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:48:54,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=90, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:48:54,597 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:48:54,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:48:54,908 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2023-11-24 23:48:54,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 23:48:54,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-24 23:48:54,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:48:54,910 INFO L225 Difference]: With dead ends: 41 [2023-11-24 23:48:54,910 INFO L226 Difference]: Without dead ends: 27 [2023-11-24 23:48:54,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=118, Unknown=0, NotChecked=0, Total=210 [2023-11-24 23:48:54,912 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:48:54,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 37 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 1 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:48:54,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-24 23:48:54,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2023-11-24 23:48:54,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:48:54,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2023-11-24 23:48:54,923 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 16 [2023-11-24 23:48:54,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:48:54,924 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2023-11-24 23:48:54,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:48:54,924 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2023-11-24 23:48:54,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 23:48:54,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:48:54,926 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:48:54,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:48:55,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:48:55,135 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:48:55,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:48:55,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1666995883, now seen corresponding path program 1 times [2023-11-24 23:48:55,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:48:55,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607989155] [2023-11-24 23:48:55,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:48:55,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:48:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:48:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:48:55,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:48:55,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607989155] [2023-11-24 23:48:55,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607989155] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:48:55,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663413343] [2023-11-24 23:48:55,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:48:55,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:48:55,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:48:55,271 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:48:55,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:48:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:48:55,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:48:55,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:48:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:48:55,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:48:55,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:48:55,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663413343] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:48:55,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [416292020] [2023-11-24 23:48:55,418 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-24 23:48:55,418 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:48:55,419 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:48:55,419 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:48:55,419 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:48:56,550 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 110 for LOIs [2023-11-24 23:48:56,698 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:48:58,156 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_~size#1_25| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_~set#1.base_25| Int) (|v_ULTIMATE.start_main_#t~ret15#1_32| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_24| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_elem_exists_~size#1_24| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_#in~value#1_24| Int) (|v_ULTIMATE.start_elem_exists_~set#1.offset_21| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_1| Int) (|v_#memory_int_63| (Array Int (Array Int Int))) (|v_ULTIMATE.start_insert_#in~set#1.offset_24| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_elem_exists_~value#1_24| Int) (|v_ULTIMATE.start_insert_~value#1_25| Int) (|v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_~n~0#1_52| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_#t~mem14#1_34| Int) (|v_ULTIMATE.start_insert_~set#1.offset_25| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_#in~size#1_24| Int) (|v_ULTIMATE.start_elem_exists_~set#1.base_21| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_31| Int) (|v_ULTIMATE.start_insert_#res#1_23| Int)) (let ((.cse4 (= |v_ULTIMATE.start_elem_exists_~i~0#1_31| 0)) (.cse6 (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_1| 0))) (let ((.cse2 (and .cse4 .cse6 (<= |v_ULTIMATE.start_elem_exists_~size#1_24| 0))) (.cse3 (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_24|)) (.cse5 (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_1| 1))) (and (let ((.cse0 (let ((.cse1 (select |c_#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1|))) (= (select .cse1 (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_1| 4)) (select .cse1 |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_1|))))) (or (and .cse0 (= |c___VERIFIER_assert_#in~cond| 0)) (and (not .cse0) (= |c___VERIFIER_assert_#in~cond| 1)))) (<= 0 (+ |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_1| 2147483648)) (or .cse2 (and .cse3 .cse4 .cse5 (= (select (select |v_#memory_int_63| |v_ULTIMATE.start_elem_exists_~set#1.base_21|) |v_ULTIMATE.start_elem_exists_~set#1.offset_21|) |v_ULTIMATE.start_elem_exists_~value#1_24|))) (or .cse2 (and .cse3 .cse4 .cse5)) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_1|) (or (and (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_1| |v_ULTIMATE.start_insert_#in~value#1_24|) (= |v_ULTIMATE.start_insert_~value#1_25| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_1|) (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_1| |v_ULTIMATE.start_insert_~size#1_25|) (= |v_#memory_int_63| |c_#memory_int|) (= |v_ULTIMATE.start_insert_#in~set#1.base_24| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_1|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_1| |v_ULTIMATE.start_insert_~set#1.offset_25|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_1| |v_ULTIMATE.start_insert_#in~size#1_24|) (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_1| |v_ULTIMATE.start_insert_~set#1.base_25|) (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_1| |v_ULTIMATE.start_insert_#in~set#1.offset_24|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_1| |v_ULTIMATE.start_insert_#res#1_23|) (= |v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_#t~ret15#1_32|) (not .cse6) (= |v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_#t~mem14#1_34|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_~n~0#1_52|)) (and (<= 0 (+ |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_1| 2147483648)) (= (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_1| (* |v_ULTIMATE.start_main_~n~0#1_52| 4)) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_1|) (+ (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_1| (* |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_1| 4))))) |c_#memory_int|) (<= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_1| 2147483647) .cse6 (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_1| (+ |v_ULTIMATE.start_main_~n~0#1_52| 1)) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_1| |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_1|))) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_1|) (<= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_1| 2147483647))))) is different from true [2023-11-24 23:48:58,508 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '772#(and (exists ((|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_~size#1_25| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_~set#1.base_25| Int) (|v_ULTIMATE.start_main_#t~ret15#1_32| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_24| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_elem_exists_~size#1_24| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_#in~value#1_24| Int) (|v_ULTIMATE.start_elem_exists_~set#1.offset_21| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_1| Int) (|v_#memory_int_63| (Array Int (Array Int Int))) (|v_ULTIMATE.start_insert_#in~set#1.offset_24| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_elem_exists_~value#1_24| Int) (|v_ULTIMATE.start_insert_~value#1_25| Int) (|v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_~n~0#1_52| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_#t~mem14#1_34| Int) (|v_ULTIMATE.start_insert_~set#1.offset_25| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_#in~size#1_24| Int) (|v_ULTIMATE.start_elem_exists_~set#1.base_21| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_31| Int) (|v_ULTIMATE.start_insert_#res#1_23| Int)) (and (or (and (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_1| |v_ULTIMATE.start_insert_#in~value#1_24|) (= |v_ULTIMATE.start_insert_~value#1_25| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_1|) (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_1| |v_ULTIMATE.start_insert_~size#1_25|) (= |v_ULTIMATE.start_insert_#in~set#1.base_24| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_1|) (= |#memory_int| |v_#memory_int_63|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_1| |v_ULTIMATE.start_insert_~set#1.offset_25|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_1| |v_ULTIMATE.start_insert_#in~size#1_24|) (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_1| |v_ULTIMATE.start_insert_~set#1.base_25|) (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_1| |v_ULTIMATE.start_insert_#in~set#1.offset_24|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_1| |v_ULTIMATE.start_insert_#res#1_23|) (= |v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_#t~ret15#1_32|) (not (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_1| 0)) (= |v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_#t~mem14#1_34|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_~n~0#1_52|)) (and (= |#memory_int| (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_1| (* |v_ULTIMATE.start_main_~n~0#1_52| 4)) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_1|) (+ (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_1| (* |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_1| 4)))))) (<= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_1| 2147483647) (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_1| 0) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_1| (+ |v_ULTIMATE.start_main_~n~0#1_52| 1)) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_1| |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_1|))) (or (and (= |v_ULTIMATE.start_elem_exists_~i~0#1_31| 0) (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_1| 0) (<= |v_ULTIMATE.start_elem_exists_~size#1_24| 0)) (and (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_24|) (= |v_ULTIMATE.start_elem_exists_~i~0#1_31| 0) (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_1| 1))) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_1|) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_1| 4))) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_1|) (or (< |v_ULTIMATE.start_elem_exists_~size#1_24| 1) (= (select (select |v_#memory_int_63| |v_ULTIMATE.start_elem_exists_~set#1.base_21|) |v_ULTIMATE.start_elem_exists_~set#1.offset_21|) |v_ULTIMATE.start_elem_exists_~value#1_24|)))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-11-24 23:48:58,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:48:58,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:48:58,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-24 23:48:58,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462954902] [2023-11-24 23:48:58,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:48:58,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:48:58,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:48:58,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:48:58,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=259, Unknown=10, NotChecked=34, Total=380 [2023-11-24 23:48:58,510 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:48:58,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:48:58,590 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2023-11-24 23:48:58,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:48:58,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-24 23:48:58,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:48:58,595 INFO L225 Difference]: With dead ends: 66 [2023-11-24 23:48:58,595 INFO L226 Difference]: Without dead ends: 44 [2023-11-24 23:48:58,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=77, Invalid=259, Unknown=10, NotChecked=34, Total=380 [2023-11-24 23:48:58,600 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 48 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:48:58,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 24 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:48:58,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-24 23:48:58,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 28. [2023-11-24 23:48:58,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:48:58,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2023-11-24 23:48:58,617 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 20 [2023-11-24 23:48:58,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:48:58,618 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2023-11-24 23:48:58,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:48:58,618 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2023-11-24 23:48:58,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-24 23:48:58,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:48:58,629 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:48:58,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:48:58,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:48:58,835 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:48:58,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:48:58,836 INFO L85 PathProgramCache]: Analyzing trace with hash -964089174, now seen corresponding path program 2 times [2023-11-24 23:48:58,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:48:58,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513997012] [2023-11-24 23:48:58,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:48:58,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:48:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:48:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-24 23:48:58,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:48:58,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513997012] [2023-11-24 23:48:58,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513997012] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:48:58,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232398081] [2023-11-24 23:48:58,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:48:58,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:48:58,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:48:58,960 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:48:58,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:48:59,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 23:48:59,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:48:59,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:48:59,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:48:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-24 23:48:59,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:48:59,086 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-24 23:48:59,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232398081] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:48:59,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [23427358] [2023-11-24 23:48:59,092 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-24 23:48:59,092 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:48:59,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:48:59,093 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:48:59,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:49:00,120 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 110 for LOIs [2023-11-24 23:49:00,229 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:49:01,856 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_elem_exists_~value#1_32| Int) (|v_#memory_int_76| (Array Int (Array Int Int))) (|v_ULTIMATE.start_insert_#in~set#1.offset_30| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_~value#1_31| Int) (|v_ULTIMATE.start_main_#t~mem14#1_40| Int) (|v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_elem_exists_~set#1.offset_29| Int) (|v_ULTIMATE.start_insert_#in~size#1_30| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_#t~ret15#1_38| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_~set#1.offset_31| Int) (|v_ULTIMATE.start_insert_~set#1.base_31| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_~size#1_31| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_39| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~n~0#1_58| Int) (|v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_elem_exists_~set#1.base_29| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_30| Int) (|v_ULTIMATE.start_elem_exists_~size#1_32| Int) (|v_ULTIMATE.start_insert_#res#1_29| Int) (|v_ULTIMATE.start_insert_#in~value#1_30| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_2| Int)) (let ((.cse2 (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_2| 0)) (.cse5 (= |v_ULTIMATE.start_elem_exists_~i~0#1_39| 0))) (let ((.cse3 (and .cse2 .cse5 (<= |v_ULTIMATE.start_elem_exists_~size#1_32| 0))) (.cse4 (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_32|)) (.cse6 (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_2| 1))) (and (let ((.cse0 (let ((.cse1 (select |c_#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2|))) (= (select .cse1 (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_2| 4)) (select .cse1 |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_2|))))) (or (and .cse0 (= |c___VERIFIER_assert_#in~cond| 0)) (and (not .cse0) (= |c___VERIFIER_assert_#in~cond| 1)))) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_2|) (or (and .cse2 (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_2|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_2| (+ |v_ULTIMATE.start_main_~n~0#1_58| 1)) (<= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_2| 2147483647) (<= 0 (+ |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_2| 2147483648)) (= (store |v_#memory_int_76| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2| (store (select |v_#memory_int_76| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_2| (* |v_ULTIMATE.start_main_~n~0#1_58| 4)) (select (select |v_#memory_int_76| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_2|) (+ (* |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_2| 4) (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_2|)))) |c_#memory_int|)) (and (= |v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_#t~mem14#1_40|) (not .cse2) (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_2| |v_ULTIMATE.start_insert_#in~set#1.offset_30|) (= |v_ULTIMATE.start_insert_#in~set#1.base_30| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_2|) (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_2| |v_ULTIMATE.start_insert_~set#1.base_31|) (= |v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_#t~ret15#1_38|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_2| |v_ULTIMATE.start_insert_~set#1.offset_31|) (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_2| |v_ULTIMATE.start_insert_#in~value#1_30|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_2| |v_ULTIMATE.start_insert_#res#1_29|) (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_2| |v_ULTIMATE.start_insert_~size#1_31|) (= |v_#memory_int_76| |c_#memory_int|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~n~0#1_58|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_2| |v_ULTIMATE.start_insert_#in~size#1_30|) (= |v_ULTIMATE.start_insert_~value#1_31| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_2|))) (<= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_2| 2147483647) (or .cse3 (and .cse4 .cse5 .cse6 (= (select (select |v_#memory_int_76| |v_ULTIMATE.start_elem_exists_~set#1.base_29|) |v_ULTIMATE.start_elem_exists_~set#1.offset_29|) |v_ULTIMATE.start_elem_exists_~value#1_32|))) (<= 0 (+ |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_2| 2147483648)) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_2|) (or .cse3 (and .cse4 .cse5 .cse6)))))) is different from true [2023-11-24 23:49:02,286 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1079#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((|v_ULTIMATE.start_elem_exists_~value#1_32| Int) (|v_#memory_int_76| (Array Int (Array Int Int))) (|v_ULTIMATE.start_insert_#in~set#1.offset_30| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_~value#1_31| Int) (|v_ULTIMATE.start_main_#t~mem14#1_40| Int) (|v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_elem_exists_~set#1.offset_29| Int) (|v_ULTIMATE.start_insert_#in~size#1_30| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_#t~ret15#1_38| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_~set#1.offset_31| Int) (|v_ULTIMATE.start_insert_~set#1.base_31| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_~size#1_31| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_39| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~n~0#1_58| Int) (|v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_elem_exists_~set#1.base_29| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_30| Int) (|v_ULTIMATE.start_elem_exists_~size#1_32| Int) (|v_ULTIMATE.start_insert_#res#1_29| Int) (|v_ULTIMATE.start_insert_#in~value#1_30| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_2| Int)) (and (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_2|) (or (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_2| 0) (= (select (select |v_#memory_int_76| |v_ULTIMATE.start_elem_exists_~set#1.base_29|) |v_ULTIMATE.start_elem_exists_~set#1.offset_29|) |v_ULTIMATE.start_elem_exists_~value#1_32|)) (or (and (= |v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_#t~mem14#1_40|) (not (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_2| 0)) (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_2| |v_ULTIMATE.start_insert_#in~set#1.offset_30|) (= |v_ULTIMATE.start_insert_#in~set#1.base_30| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_2|) (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_2| |v_ULTIMATE.start_insert_~set#1.base_31|) (= |v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_#t~ret15#1_38|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_2| |v_ULTIMATE.start_insert_~set#1.offset_31|) (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_2| |v_ULTIMATE.start_insert_#in~value#1_30|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_2| |v_ULTIMATE.start_insert_#res#1_29|) (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_2| |v_ULTIMATE.start_insert_~size#1_31|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~n~0#1_58|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_2| |v_ULTIMATE.start_insert_#in~size#1_30|) (= |v_ULTIMATE.start_insert_~value#1_31| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_2|) (= |#memory_int| |v_#memory_int_76|)) (and (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_2| 0) (= (store |v_#memory_int_76| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2| (store (select |v_#memory_int_76| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_2| (* |v_ULTIMATE.start_main_~n~0#1_58| 4)) (select (select |v_#memory_int_76| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_2|) (+ (* |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_2| 4) (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_2|)))) |#memory_int|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_2|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_2| (+ |v_ULTIMATE.start_main_~n~0#1_58| 1)) (<= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_2| 2147483647))) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_2|) (or (and (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_2| 0) (= |v_ULTIMATE.start_elem_exists_~i~0#1_39| 0) (<= |v_ULTIMATE.start_elem_exists_~size#1_32| 0)) (and (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_32|) (= |v_ULTIMATE.start_elem_exists_~i~0#1_39| 0) (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_2| 1))) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_2| 4)) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_2|)))))' at error location [2023-11-24 23:49:02,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:49:02,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:49:02,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-24 23:49:02,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870299818] [2023-11-24 23:49:02,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:49:02,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:49:02,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:02,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:49:02,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=284, Unknown=10, NotChecked=34, Total=380 [2023-11-24 23:49:02,290 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:02,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:02,384 INFO L93 Difference]: Finished difference Result 66 states and 89 transitions. [2023-11-24 23:49:02,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:49:02,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-24 23:49:02,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:02,385 INFO L225 Difference]: With dead ends: 66 [2023-11-24 23:49:02,386 INFO L226 Difference]: Without dead ends: 47 [2023-11-24 23:49:02,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=52, Invalid=284, Unknown=10, NotChecked=34, Total=380 [2023-11-24 23:49:02,387 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:02,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 46 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:49:02,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-24 23:49:02,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2023-11-24 23:49:02,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:02,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2023-11-24 23:49:02,401 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 23 [2023-11-24 23:49:02,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:02,402 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2023-11-24 23:49:02,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:02,402 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2023-11-24 23:49:02,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-24 23:49:02,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:02,404 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:02,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:02,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:02,607 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:49:02,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:02,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2101592878, now seen corresponding path program 3 times [2023-11-24 23:49:02,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:02,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460132708] [2023-11-24 23:49:02,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:02,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-24 23:49:02,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:02,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460132708] [2023-11-24 23:49:02,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460132708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:49:02,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841634709] [2023-11-24 23:49:02,772 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:49:02,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:02,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:02,774 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:02,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:49:02,923 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:49:02,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:49:02,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:49:02,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-24 23:49:02,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:49:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-24 23:49:03,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841634709] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:49:03,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2009599769] [2023-11-24 23:49:03,010 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-24 23:49:03,010 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:49:03,011 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:49:03,011 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:49:03,011 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:49:03,832 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 110 for LOIs [2023-11-24 23:49:03,922 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:49:05,465 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_#memory_int_98| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_~value#1_39| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_#t~mem14#1_48| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~n~0#1_66| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_38| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_~set#1.offset_39| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_elem_exists_~size#1_44| Int) (|v_ULTIMATE.start_insert_#in~size#1_38| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_elem_exists_~set#1.offset_41| Int) (|v_ULTIMATE.start_insert_#res#1_37| Int) (|v_ULTIMATE.start_elem_exists_~value#1_44| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_#in~value#1_38| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_~set#1.base_39| Int) (|v_ULTIMATE.start_insert_~size#1_39| Int) (|v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_#t~ret15#1_46| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_51| Int) (|v_ULTIMATE.start_elem_exists_~set#1.base_41| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_38| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_3| Int)) (let ((.cse1 (= |v_ULTIMATE.start_elem_exists_~i~0#1_51| 0)) (.cse4 (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_3| 0))) (let ((.cse3 (and .cse1 .cse4 (<= |v_ULTIMATE.start_elem_exists_~size#1_44| 0))) (.cse0 (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_3| 1)) (.cse2 (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_44|))) (and (or (and .cse0 .cse1 .cse2) .cse3) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_3|) (<= 0 (+ |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_3| 2147483648)) (or (and (<= 0 (+ |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_3| 2147483648)) (<= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_3| 2147483647) .cse4 (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_3|) (= (store |v_#memory_int_98| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3| (store (select |v_#memory_int_98| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_3| (* |v_ULTIMATE.start_main_~n~0#1_66| 4)) (select (select |v_#memory_int_98| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_3|) (+ (* |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_3| 4) (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_3|)))) |c_#memory_int|) (= (+ |v_ULTIMATE.start_main_~n~0#1_66| 1) |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_3|)) (and (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_3| |v_ULTIMATE.start_insert_#in~value#1_38|) (= |v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_#t~ret15#1_46|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_3| |v_ULTIMATE.start_insert_~set#1.offset_39|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~n~0#1_66|) (= |v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_#t~mem14#1_48|) (= |v_ULTIMATE.start_insert_~value#1_39| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_3|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_3| |v_ULTIMATE.start_insert_#in~size#1_38|) (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_3| |v_ULTIMATE.start_insert_~set#1.base_39|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_3| |v_ULTIMATE.start_insert_#res#1_37|) (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_3| |v_ULTIMATE.start_insert_#in~set#1.offset_38|) (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_3| |v_ULTIMATE.start_insert_~size#1_39|) (= |v_#memory_int_98| |c_#memory_int|) (= |v_ULTIMATE.start_insert_#in~set#1.base_38| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_3|) (not .cse4))) (<= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_3| 2147483647) (or .cse3 (and .cse0 .cse1 .cse2 (= |v_ULTIMATE.start_elem_exists_~value#1_44| (select (select |v_#memory_int_98| |v_ULTIMATE.start_elem_exists_~set#1.base_41|) |v_ULTIMATE.start_elem_exists_~set#1.offset_41|)))) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_3|) (let ((.cse5 (let ((.cse6 (select |c_#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3|))) (= (select .cse6 |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_3|) (select .cse6 (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_3| 4)))))) (or (and (= |c___VERIFIER_assert_#in~cond| 1) (not .cse5)) (and .cse5 (= |c___VERIFIER_assert_#in~cond| 0)))))))) is different from true [2023-11-24 23:49:05,826 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1471#(and (exists ((|v_#memory_int_98| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_~value#1_39| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_#t~mem14#1_48| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~n~0#1_66| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_38| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_~set#1.offset_39| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_elem_exists_~size#1_44| Int) (|v_ULTIMATE.start_insert_#in~size#1_38| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_elem_exists_~set#1.offset_41| Int) (|v_ULTIMATE.start_insert_#res#1_37| Int) (|v_ULTIMATE.start_elem_exists_~value#1_44| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_#in~value#1_38| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_~set#1.base_39| Int) (|v_ULTIMATE.start_insert_~size#1_39| Int) (|v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_#t~ret15#1_46| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_51| Int) (|v_ULTIMATE.start_elem_exists_~set#1.base_41| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_38| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_3| Int)) (and (or (and (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_3| 1) (= |v_ULTIMATE.start_elem_exists_~i~0#1_51| 0) (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_44|)) (and (= |v_ULTIMATE.start_elem_exists_~i~0#1_51| 0) (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_3| 0) (<= |v_ULTIMATE.start_elem_exists_~size#1_44| 0))) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_3|) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_3| 4))) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_3|) (or (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_3| 0) (= |v_ULTIMATE.start_elem_exists_~value#1_44| (select (select |v_#memory_int_98| |v_ULTIMATE.start_elem_exists_~set#1.base_41|) |v_ULTIMATE.start_elem_exists_~set#1.offset_41|))) (or (and (= |#memory_int| (store |v_#memory_int_98| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3| (store (select |v_#memory_int_98| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_3| (* |v_ULTIMATE.start_main_~n~0#1_66| 4)) (select (select |v_#memory_int_98| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_3|) (+ (* |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_3| 4) (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_3|))))) (<= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_3| 2147483647) (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_3| 0) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_3|) (= (+ |v_ULTIMATE.start_main_~n~0#1_66| 1) |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_3|)) (and (= |#memory_int| |v_#memory_int_98|) (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_3| |v_ULTIMATE.start_insert_#in~value#1_38|) (= |v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_#t~ret15#1_46|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_3| |v_ULTIMATE.start_insert_~set#1.offset_39|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~n~0#1_66|) (= |v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_#t~mem14#1_48|) (= |v_ULTIMATE.start_insert_~value#1_39| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_3|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_3| |v_ULTIMATE.start_insert_#in~size#1_38|) (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_3| |v_ULTIMATE.start_insert_~set#1.base_39|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_3| |v_ULTIMATE.start_insert_#res#1_37|) (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_3| |v_ULTIMATE.start_insert_#in~set#1.offset_38|) (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_3| |v_ULTIMATE.start_insert_~size#1_39|) (= |v_ULTIMATE.start_insert_#in~set#1.base_38| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_3|) (not (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_3| 0)))))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-11-24 23:49:05,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:49:05,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:49:05,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-24 23:49:05,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080545340] [2023-11-24 23:49:05,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:49:05,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 23:49:05,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:05,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 23:49:05,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=430, Unknown=10, NotChecked=46, Total=650 [2023-11-24 23:49:05,830 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:06,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:06,019 INFO L93 Difference]: Finished difference Result 130 states and 181 transitions. [2023-11-24 23:49:06,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 23:49:06,020 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-24 23:49:06,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:06,022 INFO L225 Difference]: With dead ends: 130 [2023-11-24 23:49:06,022 INFO L226 Difference]: Without dead ends: 91 [2023-11-24 23:49:06,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=164, Invalid=430, Unknown=10, NotChecked=46, Total=650 [2023-11-24 23:49:06,024 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 81 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:06,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 23 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:49:06,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-24 23:49:06,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 51. [2023-11-24 23:49:06,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:06,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2023-11-24 23:49:06,039 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 32 [2023-11-24 23:49:06,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:06,040 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2023-11-24 23:49:06,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:06,040 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2023-11-24 23:49:06,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-24 23:49:06,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:06,042 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:06,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:06,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:06,248 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:49:06,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:06,248 INFO L85 PathProgramCache]: Analyzing trace with hash -987236594, now seen corresponding path program 4 times [2023-11-24 23:49:06,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:06,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330124811] [2023-11-24 23:49:06,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:06,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-24 23:49:06,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:06,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330124811] [2023-11-24 23:49:06,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330124811] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:49:06,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831481545] [2023-11-24 23:49:06,532 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-24 23:49:06,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:06,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:06,534 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:06,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:49:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:06,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 23:49:06,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:06,713 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-24 23:49:06,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:49:06,927 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-24 23:49:06,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831481545] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:49:06,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [177728940] [2023-11-24 23:49:06,930 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-24 23:49:06,930 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:49:06,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:49:06,931 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:49:06,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:49:07,713 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 110 for LOIs [2023-11-24 23:49:07,812 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:49:09,350 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_elem_exists_~value#1_56| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_~size#1_47| Int) (|v_ULTIMATE.start_insert_~set#1.base_47| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_#t~ret15#1_54| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_46| Int) (|v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_63| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_#in~value#1_46| Int) (|v_ULTIMATE.start_elem_exists_~set#1.base_53| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_46| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_4| Int) (|v_#memory_int_126| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~n~0#1_74| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_~value#1_47| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_#t~mem14#1_56| Int) (|v_ULTIMATE.start_insert_~set#1.offset_47| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_#in~size#1_46| Int) (|v_ULTIMATE.start_elem_exists_~set#1.offset_53| Int) (|v_ULTIMATE.start_elem_exists_~size#1_56| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_#res#1_45| Int)) (let ((.cse6 (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_4| 0)) (.cse2 (= |v_ULTIMATE.start_elem_exists_~i~0#1_63| 0))) (let ((.cse3 (and (<= |v_ULTIMATE.start_elem_exists_~size#1_56| 0) .cse6 .cse2)) (.cse0 (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_4| 1)) (.cse1 (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_56|))) (and (<= 100000 |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_4|) (or (and .cse0 (= (select (select |v_#memory_int_126| |v_ULTIMATE.start_elem_exists_~set#1.base_53|) |v_ULTIMATE.start_elem_exists_~set#1.offset_53|) |v_ULTIMATE.start_elem_exists_~value#1_56|) .cse1 .cse2) .cse3) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4|) (let ((.cse4 (let ((.cse5 (select |c_#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4|))) (= (select .cse5 (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_4| 4)) (select .cse5 |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_4|))))) (or (and .cse4 (= |c___VERIFIER_assert_#in~cond| 0)) (and (not .cse4) (= |c___VERIFIER_assert_#in~cond| 1)))) (or (and (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_4| (+ |v_ULTIMATE.start_main_~n~0#1_74| 1)) .cse6 (<= 0 (+ |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_4| 2147483648)) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_4|) (= |c_#memory_int| (store |v_#memory_int_126| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4| (store (select |v_#memory_int_126| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_4| (* |v_ULTIMATE.start_main_~n~0#1_74| 4)) (select (select |v_#memory_int_126| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_4|) (+ (* |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_4| 4) (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_4|))))) (<= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_4| 2147483647)) (and (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_4| |v_ULTIMATE.start_insert_~set#1.base_47|) (= |v_ULTIMATE.start_insert_#in~set#1.base_46| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_4|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~n~0#1_74|) (= |c_#memory_int| |v_#memory_int_126|) (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_4| |v_ULTIMATE.start_insert_#in~set#1.offset_46|) (= |v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_#t~ret15#1_54|) (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_4| |v_ULTIMATE.start_insert_#in~value#1_46|) (= |v_ULTIMATE.start_insert_~value#1_47| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_4|) (not .cse6) (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_4| |v_ULTIMATE.start_insert_~size#1_47|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_4| |v_ULTIMATE.start_insert_#res#1_45|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_4| |v_ULTIMATE.start_insert_#in~size#1_46|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_4| |v_ULTIMATE.start_insert_~set#1.offset_47|) (= |v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_#t~mem14#1_56|))) (<= 0 (+ |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_4| 2147483648)) (<= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_4| 2147483647) (or .cse3 (and .cse0 .cse1 .cse2)))))) is different from true [2023-11-24 23:49:09,735 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2036#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((|v_ULTIMATE.start_elem_exists_~value#1_56| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_~size#1_47| Int) (|v_ULTIMATE.start_insert_~set#1.base_47| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_#t~ret15#1_54| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_46| Int) (|v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_63| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_#in~value#1_46| Int) (|v_ULTIMATE.start_elem_exists_~set#1.base_53| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_46| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_4| Int) (|v_#memory_int_126| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~n~0#1_74| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_~value#1_47| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_#t~mem14#1_56| Int) (|v_ULTIMATE.start_insert_~set#1.offset_47| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_#in~size#1_46| Int) (|v_ULTIMATE.start_elem_exists_~set#1.offset_53| Int) (|v_ULTIMATE.start_elem_exists_~size#1_56| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_#res#1_45| Int)) (and (<= 100000 |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_4|) (or (< |v_ULTIMATE.start_elem_exists_~size#1_56| 1) (= (select (select |v_#memory_int_126| |v_ULTIMATE.start_elem_exists_~set#1.base_53|) |v_ULTIMATE.start_elem_exists_~set#1.offset_53|) |v_ULTIMATE.start_elem_exists_~value#1_56|)) (or (and (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_4| |v_ULTIMATE.start_insert_~set#1.base_47|) (= |v_ULTIMATE.start_insert_#in~set#1.base_46| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_4|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~n~0#1_74|) (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_4| |v_ULTIMATE.start_insert_#in~set#1.offset_46|) (= |v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_#t~ret15#1_54|) (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_4| |v_ULTIMATE.start_insert_#in~value#1_46|) (= |v_ULTIMATE.start_insert_~value#1_47| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_4|) (not (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_4| 0)) (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_4| |v_ULTIMATE.start_insert_~size#1_47|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_4| |v_ULTIMATE.start_insert_#res#1_45|) (= |#memory_int| |v_#memory_int_126|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_4| |v_ULTIMATE.start_insert_#in~size#1_46|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_4| |v_ULTIMATE.start_insert_~set#1.offset_47|) (= |v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_#t~mem14#1_56|)) (and (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_4| (+ |v_ULTIMATE.start_main_~n~0#1_74| 1)) (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_4| 0) (= |#memory_int| (store |v_#memory_int_126| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4| (store (select |v_#memory_int_126| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_4| (* |v_ULTIMATE.start_main_~n~0#1_74| 4)) (select (select |v_#memory_int_126| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_4|) (+ (* |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_4| 4) (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_4|))))) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_4|) (<= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_4| 2147483647))) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4|) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_4|) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_4| 4))) (or (and (<= |v_ULTIMATE.start_elem_exists_~size#1_56| 0) (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_4| 0) (= |v_ULTIMATE.start_elem_exists_~i~0#1_63| 0)) (and (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_4| 1) (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_56|) (= |v_ULTIMATE.start_elem_exists_~i~0#1_63| 0))))))' at error location [2023-11-24 23:49:09,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:49:09,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:49:09,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-24 23:49:09,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046906442] [2023-11-24 23:49:09,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:49:09,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-24 23:49:09,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:09,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-24 23:49:09,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=880, Unknown=10, NotChecked=70, Total=1406 [2023-11-24 23:49:09,739 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 25 states, 25 states have (on average 1.6) internal successors, (40), 24 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:10,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:10,089 INFO L93 Difference]: Finished difference Result 190 states and 271 transitions. [2023-11-24 23:49:10,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-24 23:49:10,090 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 24 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-11-24 23:49:10,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:10,092 INFO L225 Difference]: With dead ends: 190 [2023-11-24 23:49:10,092 INFO L226 Difference]: Without dead ends: 151 [2023-11-24 23:49:10,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=446, Invalid=880, Unknown=10, NotChecked=70, Total=1406 [2023-11-24 23:49:10,094 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 236 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:10,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 23 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:49:10,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-24 23:49:10,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 63. [2023-11-24 23:49:10,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 60 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:10,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2023-11-24 23:49:10,122 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 38 [2023-11-24 23:49:10,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:10,122 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2023-11-24 23:49:10,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 24 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:10,123 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2023-11-24 23:49:10,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-24 23:49:10,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:10,129 INFO L195 NwaCegarLoop]: trace histogram [22, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:10,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:10,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:10,330 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:49:10,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:10,330 INFO L85 PathProgramCache]: Analyzing trace with hash 404956878, now seen corresponding path program 5 times [2023-11-24 23:49:10,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:10,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808812514] [2023-11-24 23:49:10,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:10,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-24 23:49:11,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:11,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808812514] [2023-11-24 23:49:11,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808812514] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:49:11,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916244151] [2023-11-24 23:49:11,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:49:11,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:11,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:11,281 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:11,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:49:11,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-24 23:49:11,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:49:11,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:49:11,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-11-24 23:49:11,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:49:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-11-24 23:49:11,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916244151] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:49:11,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2043708208] [2023-11-24 23:49:11,678 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-24 23:49:11,678 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:49:11,679 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:49:11,679 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:49:11,679 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:49:12,516 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 110 for LOIs [2023-11-24 23:49:12,631 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:49:14,358 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~n~0#1_82| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_54| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_~value#1_55| Int) (|v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_#t~mem14#1_64| Int) (|v_ULTIMATE.start_insert_#in~size#1_54| Int) (|v_ULTIMATE.start_elem_exists_~size#1_68| Int) (|v_#memory_int_144| (Array Int (Array Int Int))) (|v_ULTIMATE.start_elem_exists_~set#1.offset_65| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_~set#1.offset_55| Int) (|v_ULTIMATE.start_insert_#res#1_53| Int) (|v_ULTIMATE.start_insert_~set#1.base_55| Int) (|v_ULTIMATE.start_insert_~size#1_55| Int) (|v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_elem_exists_~value#1_68| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_54| Int) (|v_ULTIMATE.start_main_#t~ret15#1_62| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_elem_exists_~set#1.base_65| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_75| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_#in~value#1_54| Int)) (let ((.cse4 (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_5| 0)) (.cse2 (= |v_ULTIMATE.start_elem_exists_~i~0#1_75| 0))) (let ((.cse0 (and .cse4 (<= |v_ULTIMATE.start_elem_exists_~size#1_68| 0) .cse2)) (.cse1 (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_68|)) (.cse3 (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_5| 1))) (and (or .cse0 (and .cse1 .cse2 (= (select (select |v_#memory_int_144| |v_ULTIMATE.start_elem_exists_~set#1.base_65|) |v_ULTIMATE.start_elem_exists_~set#1.offset_65|) |v_ULTIMATE.start_elem_exists_~value#1_68|) .cse3)) (<= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_5| 2147483647) (or (and (= |v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_#t~mem14#1_64|) (= |v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_#t~ret15#1_62|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_5| |v_ULTIMATE.start_insert_#in~size#1_54|) (= |c_#memory_int| |v_#memory_int_144|) (= |v_ULTIMATE.start_insert_#in~set#1.base_54| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_5|) (= |v_ULTIMATE.start_insert_~value#1_55| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_5|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_5| |v_ULTIMATE.start_insert_~set#1.offset_55|) (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_5| |v_ULTIMATE.start_insert_~size#1_55|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_5| |v_ULTIMATE.start_insert_#res#1_53|) (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_5| |v_ULTIMATE.start_insert_#in~value#1_54|) (not .cse4) (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_5| |v_ULTIMATE.start_insert_#in~set#1.offset_54|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~n~0#1_82|) (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_5| |v_ULTIMATE.start_insert_~set#1.base_55|)) (and (<= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_5| 2147483647) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_5|) (<= 0 (+ |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_5| 2147483648)) .cse4 (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_5| (+ |v_ULTIMATE.start_main_~n~0#1_82| 1)) (= (store |v_#memory_int_144| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5| (store (select |v_#memory_int_144| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_5| (* |v_ULTIMATE.start_main_~n~0#1_82| 4)) (select (select |v_#memory_int_144| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_5|) (+ (- 4) (* |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_5| 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_5|)))) |c_#memory_int|))) (let ((.cse5 (let ((.cse6 (select |c_#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5|))) (= (select .cse6 (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_5| 4)) (select .cse6 |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_5|))))) (or (and (not .cse5) (= |c___VERIFIER_assert_#in~cond| 1)) (and (= |c___VERIFIER_assert_#in~cond| 0) .cse5))) (<= 0 (+ |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_5| 2147483648)) (or .cse0 (and .cse1 .cse2 .cse3)) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_5|) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5|))))) is different from true [2023-11-24 23:49:14,827 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2815#(and (exists ((|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~n~0#1_82| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_54| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_~value#1_55| Int) (|v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_#t~mem14#1_64| Int) (|v_ULTIMATE.start_insert_#in~size#1_54| Int) (|v_ULTIMATE.start_elem_exists_~size#1_68| Int) (|v_#memory_int_144| (Array Int (Array Int Int))) (|v_ULTIMATE.start_elem_exists_~set#1.offset_65| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_~set#1.offset_55| Int) (|v_ULTIMATE.start_insert_#res#1_53| Int) (|v_ULTIMATE.start_insert_~set#1.base_55| Int) (|v_ULTIMATE.start_insert_~size#1_55| Int) (|v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_elem_exists_~value#1_68| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_54| Int) (|v_ULTIMATE.start_main_#t~ret15#1_62| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_elem_exists_~set#1.base_65| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_75| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_#in~value#1_54| Int)) (and (or (< |v_ULTIMATE.start_elem_exists_~size#1_68| 1) (= (select (select |v_#memory_int_144| |v_ULTIMATE.start_elem_exists_~set#1.base_65|) |v_ULTIMATE.start_elem_exists_~set#1.offset_65|) |v_ULTIMATE.start_elem_exists_~value#1_68|)) (or (and (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_5| 0) (<= |v_ULTIMATE.start_elem_exists_~size#1_68| 0) (= |v_ULTIMATE.start_elem_exists_~i~0#1_75| 0)) (and (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_68|) (= |v_ULTIMATE.start_elem_exists_~i~0#1_75| 0) (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_5| 1))) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_5|) (or (and (<= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_5| 2147483647) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_5|) (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_5| 0) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_5| (+ |v_ULTIMATE.start_main_~n~0#1_82| 1)) (= (store |v_#memory_int_144| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5| (store (select |v_#memory_int_144| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_5| (* |v_ULTIMATE.start_main_~n~0#1_82| 4)) (select (select |v_#memory_int_144| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_5|) (+ (- 4) (* |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_5| 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_5|)))) |#memory_int|)) (and (= |v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_#t~mem14#1_64|) (= |v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_#t~ret15#1_62|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_5| |v_ULTIMATE.start_insert_#in~size#1_54|) (= |#memory_int| |v_#memory_int_144|) (= |v_ULTIMATE.start_insert_#in~set#1.base_54| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_5|) (= |v_ULTIMATE.start_insert_~value#1_55| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_5|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_5| |v_ULTIMATE.start_insert_~set#1.offset_55|) (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_5| |v_ULTIMATE.start_insert_~size#1_55|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_5| |v_ULTIMATE.start_insert_#res#1_53|) (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_5| |v_ULTIMATE.start_insert_#in~value#1_54|) (not (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_5| 0)) (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_5| |v_ULTIMATE.start_insert_#in~set#1.offset_54|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~n~0#1_82|) (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_5| |v_ULTIMATE.start_insert_~set#1.base_55|))) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_5| 4)) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_5|)) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5|))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-11-24 23:49:14,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:49:14,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:49:14,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 7, 7] total 35 [2023-11-24 23:49:14,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812820110] [2023-11-24 23:49:14,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:49:14,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-24 23:49:14,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:14,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-24 23:49:14,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=1645, Unknown=10, NotChecked=90, Total=2256 [2023-11-24 23:49:14,832 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:15,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:15,595 INFO L93 Difference]: Finished difference Result 245 states and 347 transitions. [2023-11-24 23:49:15,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-24 23:49:15,597 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-24 23:49:15,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:15,600 INFO L225 Difference]: With dead ends: 245 [2023-11-24 23:49:15,600 INFO L226 Difference]: Without dead ends: 206 [2023-11-24 23:49:15,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=861, Invalid=2325, Unknown=10, NotChecked=110, Total=3306 [2023-11-24 23:49:15,606 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 488 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:15,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 109 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:49:15,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-24 23:49:15,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 112. [2023-11-24 23:49:15,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 109 states have (on average 1.2935779816513762) internal successors, (141), 109 states have internal predecessors, (141), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:15,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 143 transitions. [2023-11-24 23:49:15,656 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 143 transitions. Word has length 50 [2023-11-24 23:49:15,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:15,659 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 143 transitions. [2023-11-24 23:49:15,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:15,659 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 143 transitions. [2023-11-24 23:49:15,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-24 23:49:15,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:15,665 INFO L195 NwaCegarLoop]: trace histogram [23, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:15,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:15,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:15,871 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:49:15,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:15,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1967788957, now seen corresponding path program 6 times [2023-11-24 23:49:15,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:15,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686575775] [2023-11-24 23:49:15,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:15,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-24 23:49:17,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:17,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686575775] [2023-11-24 23:49:17,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686575775] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:49:17,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052338837] [2023-11-24 23:49:17,041 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:49:17,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:17,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:17,044 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:17,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:49:17,303 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:49:17,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:49:17,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-24 23:49:17,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:17,357 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-24 23:49:17,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:49:18,186 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-24 23:49:18,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052338837] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:49:18,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1354754952] [2023-11-24 23:49:18,188 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-24 23:49:18,188 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:49:18,188 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:49:18,189 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:49:18,189 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:49:18,899 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 110 for LOIs [2023-11-24 23:49:18,992 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:49:20,775 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_elem_exists_~value#1_92| Int) (|v_ULTIMATE.start_insert_~size#1_69| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_~set#1.base_69| Int) (|v_ULTIMATE.start_main_#t~ret15#1_76| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_68| Int) (|v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_#in~value#1_68| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_elem_exists_~set#1.offset_89| Int) (|v_ULTIMATE.start_elem_exists_~size#1_92| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_68| Int) (|v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_99| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~n~0#1_96| Int) (|v_ULTIMATE.start_insert_~value#1_69| Int) (|v_ULTIMATE.start_main_#t~mem14#1_78| Int) (|v_ULTIMATE.start_insert_~set#1.offset_69| Int) (|v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_#in~size#1_68| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_elem_exists_~set#1.base_89| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_#res#1_67| Int) (|v_#memory_int_197| (Array Int (Array Int Int)))) (let ((.cse2 (= |v_ULTIMATE.start_elem_exists_~i~0#1_99| 0)) (.cse6 (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_6| 0))) (let ((.cse5 (and .cse2 (<= |v_ULTIMATE.start_elem_exists_~size#1_92| 0) .cse6)) (.cse3 (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_92|)) (.cse4 (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_6| 1))) (and (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_6|) (let ((.cse0 (let ((.cse1 (select |c_#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6|))) (= (select .cse1 |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_6|) (select .cse1 (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_6| 4)))))) (or (and (= |c___VERIFIER_assert_#in~cond| 1) (not .cse0)) (and .cse0 (= |c___VERIFIER_assert_#in~cond| 0)))) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_6|) (<= 0 (+ |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_6| 2147483648)) (or (and .cse2 .cse3 .cse4) .cse5) (or .cse5 (and .cse2 .cse3 .cse4 (= |v_ULTIMATE.start_elem_exists_~value#1_92| (select (select |v_#memory_int_197| |v_ULTIMATE.start_elem_exists_~set#1.base_89|) |v_ULTIMATE.start_elem_exists_~set#1.offset_89|)))) (<= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_6| 2147483647) (or (and (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_6| |v_ULTIMATE.start_insert_~size#1_69|) (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_6| |v_ULTIMATE.start_insert_#in~value#1_68|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_6| |v_ULTIMATE.start_insert_#res#1_67|) (not .cse6) (= |c_#memory_int| |v_#memory_int_197|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_6| |v_ULTIMATE.start_insert_#in~size#1_68|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_6| |v_ULTIMATE.start_insert_~set#1.offset_69|) (= |v_ULTIMATE.start_insert_#in~set#1.base_68| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_6|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_~n~0#1_96|) (= |v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_#t~ret15#1_76|) (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_6| |v_ULTIMATE.start_insert_~set#1.base_69|) (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_6| |v_ULTIMATE.start_insert_#in~set#1.offset_68|) (= |v_ULTIMATE.start_insert_~value#1_69| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_6|) (= |v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_#t~mem14#1_78|)) (and (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_6|) (<= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_6| 2147483647) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_6| (+ |v_ULTIMATE.start_main_~n~0#1_96| 1)) (= (store |v_#memory_int_197| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_197| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_6| (* |v_ULTIMATE.start_main_~n~0#1_96| 4)) (select (select |v_#memory_int_197| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_6|) (+ (* |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_6| 4) (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_6|)))) |c_#memory_int|) (<= 0 (+ |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_6| 2147483648)) .cse6)))))) is different from true [2023-11-24 23:49:21,163 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3950#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_elem_exists_~value#1_92| Int) (|v_ULTIMATE.start_insert_~size#1_69| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_~set#1.base_69| Int) (|v_ULTIMATE.start_main_#t~ret15#1_76| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_68| Int) (|v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_#in~value#1_68| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_elem_exists_~set#1.offset_89| Int) (|v_ULTIMATE.start_elem_exists_~size#1_92| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_68| Int) (|v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_99| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~n~0#1_96| Int) (|v_ULTIMATE.start_insert_~value#1_69| Int) (|v_ULTIMATE.start_main_#t~mem14#1_78| Int) (|v_ULTIMATE.start_insert_~set#1.offset_69| Int) (|v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_#in~size#1_68| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_elem_exists_~set#1.base_89| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_#res#1_67| Int) (|v_#memory_int_197| (Array Int (Array Int Int)))) (and (or (and (= |#memory_int| (store |v_#memory_int_197| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_197| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_6| (* |v_ULTIMATE.start_main_~n~0#1_96| 4)) (select (select |v_#memory_int_197| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_6|) (+ (* |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_6| 4) (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_6|))))) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_6|) (<= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_6| 2147483647) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_6| (+ |v_ULTIMATE.start_main_~n~0#1_96| 1)) (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_6| 0)) (and (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_6| |v_ULTIMATE.start_insert_~size#1_69|) (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_6| |v_ULTIMATE.start_insert_#in~value#1_68|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_6| |v_ULTIMATE.start_insert_#res#1_67|) (not (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_6| 0)) (= |#memory_int| |v_#memory_int_197|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_6| |v_ULTIMATE.start_insert_#in~size#1_68|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_6| |v_ULTIMATE.start_insert_~set#1.offset_69|) (= |v_ULTIMATE.start_insert_#in~set#1.base_68| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_6|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_~n~0#1_96|) (= |v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_#t~ret15#1_76|) (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_6| |v_ULTIMATE.start_insert_~set#1.base_69|) (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_6| |v_ULTIMATE.start_insert_#in~set#1.offset_68|) (= |v_ULTIMATE.start_insert_~value#1_69| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_6|) (= |v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_#t~mem14#1_78|))) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_6|) (or (= |v_ULTIMATE.start_elem_exists_~value#1_92| (select (select |v_#memory_int_197| |v_ULTIMATE.start_elem_exists_~set#1.base_89|) |v_ULTIMATE.start_elem_exists_~set#1.offset_89|)) (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_6| 0)) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_6|) (or (and (= |v_ULTIMATE.start_elem_exists_~i~0#1_99| 0) (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_92|) (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_6| 1)) (and (= |v_ULTIMATE.start_elem_exists_~i~0#1_99| 0) (<= |v_ULTIMATE.start_elem_exists_~size#1_92| 0) (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_6| 0))) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_6|) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_6| 4))))))' at error location [2023-11-24 23:49:21,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:49:21,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:49:21,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2023-11-24 23:49:21,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367776990] [2023-11-24 23:49:21,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:49:21,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-24 23:49:21,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:21,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-24 23:49:21,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1551, Invalid=2349, Unknown=10, NotChecked=122, Total=4032 [2023-11-24 23:49:21,169 INFO L87 Difference]: Start difference. First operand 112 states and 143 transitions. Second operand has 51 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 50 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:21,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:21,950 INFO L93 Difference]: Finished difference Result 416 states and 598 transitions. [2023-11-24 23:49:21,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-24 23:49:21,951 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 50 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-11-24 23:49:21,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:21,954 INFO L225 Difference]: With dead ends: 416 [2023-11-24 23:49:21,955 INFO L226 Difference]: Without dead ends: 329 [2023-11-24 23:49:21,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1551, Invalid=2349, Unknown=10, NotChecked=122, Total=4032 [2023-11-24 23:49:21,958 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 443 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:21,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 29 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:49:21,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-11-24 23:49:22,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 137. [2023-11-24 23:49:22,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 134 states have (on average 1.2388059701492538) internal successors, (166), 134 states have internal predecessors, (166), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:22,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 168 transitions. [2023-11-24 23:49:22,020 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 168 transitions. Word has length 75 [2023-11-24 23:49:22,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:22,021 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 168 transitions. [2023-11-24 23:49:22,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 50 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:22,021 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 168 transitions. [2023-11-24 23:49:22,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-24 23:49:22,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:22,025 INFO L195 NwaCegarLoop]: trace histogram [48, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:22,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:22,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 23:49:22,227 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:49:22,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:22,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1903898546, now seen corresponding path program 7 times [2023-11-24 23:49:22,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:22,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788579736] [2023-11-24 23:49:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:22,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1376 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-24 23:49:25,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:25,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788579736] [2023-11-24 23:49:25,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788579736] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:49:25,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402773739] [2023-11-24 23:49:25,441 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-24 23:49:25,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:25,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:25,443 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:25,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:49:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:25,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-24 23:49:25,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1376 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-24 23:49:25,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:49:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1376 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-24 23:49:29,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402773739] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:49:29,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [647079569] [2023-11-24 23:49:29,474 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-24 23:49:29,474 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:49:29,474 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:49:29,475 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:49:29,475 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:49:30,277 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 110 for LOIs [2023-11-24 23:49:30,353 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:49:32,225 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_insert_~size#1_83| Int) (|v_ULTIMATE.start_insert_~set#1.base_83| Int) (|v_ULTIMATE.start_insert_#res#1_81| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_insert_#in~size#1_82| Int) (|v_ULTIMATE.start_insert_#in~value#1_82| Int) (|v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_82| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_insert_~value#1_83| Int) (|v_ULTIMATE.start_elem_exists_~value#1_116| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_#t~ret15#1_90| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_82| Int) (|v_ULTIMATE.start_elem_exists_~size#1_116| Int) (|v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_elem_exists_~set#1.offset_113| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_123| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_#t~mem14#1_92| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_insert_~set#1.offset_83| Int) (|v_#memory_int_275| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~n~0#1_110| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_elem_exists_~set#1.base_113| Int)) (let ((.cse4 (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_7| 0)) (.cse2 (= |v_ULTIMATE.start_elem_exists_~i~0#1_123| 0))) (let ((.cse0 (and .cse4 .cse2 (<= |v_ULTIMATE.start_elem_exists_~size#1_116| 0))) (.cse1 (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_7| 1)) (.cse3 (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_116|))) (and (<= 100000 |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_7|) (<= 0 (+ |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_7| 2147483648)) (or .cse0 (and .cse1 .cse2 .cse3)) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_7|) (<= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_7| 2147483647) (or .cse0 (and .cse1 .cse2 (= (select (select |v_#memory_int_275| |v_ULTIMATE.start_elem_exists_~set#1.base_113|) |v_ULTIMATE.start_elem_exists_~set#1.offset_113|) |v_ULTIMATE.start_elem_exists_~value#1_116|) .cse3)) (or (and (= |v_ULTIMATE.start_insert_#in~set#1.base_82| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_7|) (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_7| |v_ULTIMATE.start_insert_~set#1.base_83|) (= |v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_#t~ret15#1_90|) (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_7| |v_ULTIMATE.start_insert_#in~value#1_82|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_7| |v_ULTIMATE.start_insert_#res#1_81|) (not .cse4) (= |v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_#t~mem14#1_92|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_7| |v_ULTIMATE.start_insert_~set#1.offset_83|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_7| |v_ULTIMATE.start_insert_#in~size#1_82|) (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_7| |v_ULTIMATE.start_insert_#in~set#1.offset_82|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~n~0#1_110|) (= |v_ULTIMATE.start_insert_~value#1_83| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_7|) (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_7| |v_ULTIMATE.start_insert_~size#1_83|) (= |c_#memory_int| |v_#memory_int_275|)) (and .cse4 (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_7| (+ |v_ULTIMATE.start_main_~n~0#1_110| 1)) (<= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_7| 2147483647) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_7|) (= (store |v_#memory_int_275| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_7| (store (select |v_#memory_int_275| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_7|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_7| (* |v_ULTIMATE.start_main_~n~0#1_110| 4)) (select (select |v_#memory_int_275| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_7|) (+ (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_7| (* |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_7| 4))))) |c_#memory_int|) (<= 0 (+ |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_7| 2147483648)))) (let ((.cse5 (let ((.cse6 (select |c_#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_7|))) (= (select .cse6 |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_7|) (select .cse6 (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_7| 4)))))) (or (and (= |c___VERIFIER_assert_#in~cond| 0) .cse5) (and (= |c___VERIFIER_assert_#in~cond| 1) (not .cse5)))))))) is different from true [2023-11-24 23:49:32,697 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5615#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((|v_ULTIMATE.start_insert_~size#1_83| Int) (|v_ULTIMATE.start_insert_~set#1.base_83| Int) (|v_ULTIMATE.start_insert_#res#1_81| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_insert_#in~size#1_82| Int) (|v_ULTIMATE.start_insert_#in~value#1_82| Int) (|v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_82| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_insert_~value#1_83| Int) (|v_ULTIMATE.start_elem_exists_~value#1_116| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_#t~ret15#1_90| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_82| Int) (|v_ULTIMATE.start_elem_exists_~size#1_116| Int) (|v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_elem_exists_~set#1.offset_113| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_123| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_#t~mem14#1_92| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_insert_~set#1.offset_83| Int) (|v_#memory_int_275| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~n~0#1_110| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_elem_exists_~set#1.base_113| Int)) (and (or (and (= |v_ULTIMATE.start_insert_#in~set#1.base_82| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_7|) (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_7| |v_ULTIMATE.start_insert_~set#1.base_83|) (= |v_ULTIMATE.start_main_#t~ret15#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_#t~ret15#1_90|) (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_7| |v_ULTIMATE.start_insert_#in~value#1_82|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_7| |v_ULTIMATE.start_insert_#res#1_81|) (not (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_7| 0)) (= |v_ULTIMATE.start_main_#t~mem14#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_#t~mem14#1_92|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_7| |v_ULTIMATE.start_insert_~set#1.offset_83|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_7| |v_ULTIMATE.start_insert_#in~size#1_82|) (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_7| |v_ULTIMATE.start_insert_#in~set#1.offset_82|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~n~0#1_110|) (= |v_ULTIMATE.start_insert_~value#1_83| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_7|) (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_7| |v_ULTIMATE.start_insert_~size#1_83|) (= |#memory_int| |v_#memory_int_275|)) (and (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_7| 0) (= |#memory_int| (store |v_#memory_int_275| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_7| (store (select |v_#memory_int_275| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_7|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_7| (* |v_ULTIMATE.start_main_~n~0#1_110| 4)) (select (select |v_#memory_int_275| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_7|) (+ (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_7| (* |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_7| 4)))))) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_7| (+ |v_ULTIMATE.start_main_~n~0#1_110| 1)) (<= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_7| 2147483647) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_7|))) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_BEFORE_CALL_7|) (or (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_7| 0) (= (select (select |v_#memory_int_275| |v_ULTIMATE.start_elem_exists_~set#1.base_113|) |v_ULTIMATE.start_elem_exists_~set#1.offset_113|) |v_ULTIMATE.start_elem_exists_~value#1_116|)) (or (and (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_7| 0) (= |v_ULTIMATE.start_elem_exists_~i~0#1_123| 0) (<= |v_ULTIMATE.start_elem_exists_~size#1_116| 0)) (and (= |v_ULTIMATE.start_elem_exists_#res#1_BEFORE_CALL_7| 1) (= |v_ULTIMATE.start_elem_exists_~i~0#1_123| 0) (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_116|))) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_7|) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_7|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_7|) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_7|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_7| 4))))))' at error location [2023-11-24 23:49:32,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:49:32,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:49:32,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 100 [2023-11-24 23:49:32,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302532050] [2023-11-24 23:49:32,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:49:32,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2023-11-24 23:49:32,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:32,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2023-11-24 23:49:32,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5576, Invalid=7074, Unknown=10, NotChecked=222, Total=12882 [2023-11-24 23:49:32,707 INFO L87 Difference]: Start difference. First operand 137 states and 168 transitions. Second operand has 101 states, 101 states have (on average 1.1485148514851484) internal successors, (116), 100 states have internal predecessors, (116), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:36,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:36,286 INFO L93 Difference]: Finished difference Result 666 states and 973 transitions. [2023-11-24 23:49:36,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-11-24 23:49:36,287 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1485148514851484) internal successors, (116), 100 states have internal predecessors, (116), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-24 23:49:36,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:36,300 INFO L225 Difference]: With dead ends: 666 [2023-11-24 23:49:36,300 INFO L226 Difference]: Without dead ends: 579 [2023-11-24 23:49:36,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2228 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=5576, Invalid=7074, Unknown=10, NotChecked=222, Total=12882 [2023-11-24 23:49:36,308 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 984 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:36,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 54 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-24 23:49:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2023-11-24 23:49:36,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 187. [2023-11-24 23:49:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 184 states have (on average 1.173913043478261) internal successors, (216), 184 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:49:36,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 218 transitions. [2023-11-24 23:49:36,390 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 218 transitions. Word has length 100 [2023-11-24 23:49:36,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:36,393 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 218 transitions. [2023-11-24 23:49:36,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1485148514851484) internal successors, (116), 100 states have internal predecessors, (116), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:36,393 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 218 transitions. [2023-11-24 23:49:36,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-24 23:49:36,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:36,396 INFO L195 NwaCegarLoop]: trace histogram [98, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:36,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:36,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04f1181f-9754-4337-8cff-9e55f08f61b7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-24 23:49:36,604 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:49:36,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash -972091922, now seen corresponding path program 8 times [2023-11-24 23:49:36,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:36,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942496813] [2023-11-24 23:49:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:36,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat