./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_szymanski.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/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_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_szymanski.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/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_a28989b4-4246-4946-9e1c-a90596c4af03/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 8c5cb1d1ec86f1df708ae47d652aad74925d4eb7bf3fc3a2c37d76896a5071e8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:19:12,085 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:19:12,205 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:19:12,214 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:19:12,214 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:19:12,263 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:19:12,264 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:19:12,264 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:19:12,265 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:19:12,270 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:19:12,271 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:19:12,271 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:19:12,272 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:19:12,274 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:19:12,274 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:19:12,275 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:19:12,275 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:19:12,276 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:19:12,276 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:19:12,277 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:19:12,278 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:19:12,279 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:19:12,280 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:19:12,281 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:19:12,281 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:19:12,282 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:19:12,282 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:19:12,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:19:12,283 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:19:12,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:19:12,285 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:19:12,285 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:19:12,286 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:19:12,286 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:19:12,286 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:19:12,287 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:19:12,287 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:19:12,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:19:12,288 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:19:12,288 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:19:12,288 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:19:12,289 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:19:12,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:19:12,289 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:19:12,290 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:19:12,290 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:19:12,290 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:19:12,291 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_a28989b4-4246-4946-9e1c-a90596c4af03/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c5cb1d1ec86f1df708ae47d652aad74925d4eb7bf3fc3a2c37d76896a5071e8 [2023-11-24 23:19:12,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:19:12,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:19:12,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:19:12,657 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:19:12,658 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:19:12,659 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/seq-pthread/cs_szymanski.i [2023-11-24 23:19:15,711 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:19:16,157 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:19:16,157 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/sv-benchmarks/c/seq-pthread/cs_szymanski.i [2023-11-24 23:19:16,176 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91/data/66fce0267/7c841584501642e185d8d5d490ff3e74/FLAG311a32c1a [2023-11-24 23:19:16,189 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91/data/66fce0267/7c841584501642e185d8d5d490ff3e74 [2023-11-24 23:19:16,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:19:16,193 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:19:16,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:19:16,195 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:19:16,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:19:16,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:19:16" (1/1) ... [2023-11-24 23:19:16,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73df6fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:16, skipping insertion in model container [2023-11-24 23:19:16,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:19:16" (1/1) ... [2023-11-24 23:19:16,260 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:19:16,636 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_a28989b4-4246-4946-9e1c-a90596c4af03/sv-benchmarks/c/seq-pthread/cs_szymanski.i[23606,23619] [2023-11-24 23:19:16,748 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:19:16,775 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:19:16,835 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_a28989b4-4246-4946-9e1c-a90596c4af03/sv-benchmarks/c/seq-pthread/cs_szymanski.i[23606,23619] [2023-11-24 23:19:16,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:19:17,010 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:19:17,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:17 WrapperNode [2023-11-24 23:19:17,011 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:19:17,012 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:19:17,012 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:19:17,013 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:19:17,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:17" (1/1) ... [2023-11-24 23:19:17,080 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:17" (1/1) ... [2023-11-24 23:19:17,125 INFO L138 Inliner]: procedures = 145, calls = 289, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 401 [2023-11-24 23:19:17,125 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:19:17,126 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:19:17,126 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:19:17,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:19:17,136 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:17" (1/1) ... [2023-11-24 23:19:17,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:17" (1/1) ... [2023-11-24 23:19:17,157 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:17" (1/1) ... [2023-11-24 23:19:17,158 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:17" (1/1) ... [2023-11-24 23:19:17,197 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:17" (1/1) ... [2023-11-24 23:19:17,218 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:17" (1/1) ... [2023-11-24 23:19:17,236 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:17" (1/1) ... [2023-11-24 23:19:17,239 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:17" (1/1) ... [2023-11-24 23:19:17,246 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:19:17,257 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:19:17,257 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:19:17,257 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:19:17,258 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:17" (1/1) ... [2023-11-24 23:19:17,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:19:17,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:19:17,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:19:17,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:19:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:19:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:19:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:19:17,365 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:19:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:19:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:19:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:19:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2023-11-24 23:19:17,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2023-11-24 23:19:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:19:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2023-11-24 23:19:17,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2023-11-24 23:19:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-11-24 23:19:17,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-11-24 23:19:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:19:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:19:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2023-11-24 23:19:17,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2023-11-24 23:19:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:19:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:19:17,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:19:17,549 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:19:17,553 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:19:20,236 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:19:20,392 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:19:20,393 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 23:19:20,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:19:20 BoogieIcfgContainer [2023-11-24 23:19:20,395 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:19:20,398 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:19:20,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:19:20,402 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:19:20,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:19:16" (1/3) ... [2023-11-24 23:19:20,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724ad46d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:19:20, skipping insertion in model container [2023-11-24 23:19:20,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:17" (2/3) ... [2023-11-24 23:19:20,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724ad46d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:19:20, skipping insertion in model container [2023-11-24 23:19:20,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:19:20" (3/3) ... [2023-11-24 23:19:20,407 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_szymanski.i [2023-11-24 23:19:20,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:19:20,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:19:20,474 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:19:20,480 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;@58bfb2e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:19:20,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:19:20,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 55 states have internal predecessors, (68), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-24 23:19:20,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-24 23:19:20,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:20,501 INFO L195 NwaCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:20,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:19:20,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:20,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1848185901, now seen corresponding path program 1 times [2023-11-24 23:19:20,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:20,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230495534] [2023-11-24 23:19:20,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:20,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:21,460 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-11-24 23:19:21,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:21,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230495534] [2023-11-24 23:19:21,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230495534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:21,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:19:21,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:19:21,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460329973] [2023-11-24 23:19:21,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:21,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:19:21,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:21,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:19:21,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:19:21,520 INFO L87 Difference]: Start difference. First operand has 93 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 55 states have internal predecessors, (68), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-24 23:19:23,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:19:25,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:19:25,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:25,731 INFO L93 Difference]: Finished difference Result 185 states and 263 transitions. [2023-11-24 23:19:25,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:19:25,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 82 [2023-11-24 23:19:25,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:25,743 INFO L225 Difference]: With dead ends: 185 [2023-11-24 23:19:25,743 INFO L226 Difference]: Without dead ends: 93 [2023-11-24 23:19:25,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:19:25,751 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 2 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:25,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 232 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2023-11-24 23:19:25,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-24 23:19:25,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2023-11-24 23:19:25,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 54 states have internal predecessors, (66), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-24 23:19:25,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 130 transitions. [2023-11-24 23:19:25,805 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 130 transitions. Word has length 82 [2023-11-24 23:19:25,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:25,806 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 130 transitions. [2023-11-24 23:19:25,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-24 23:19:25,806 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 130 transitions. [2023-11-24 23:19:25,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-24 23:19:25,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:25,812 INFO L195 NwaCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:25,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:19:25,813 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:19:25,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:25,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1198312181, now seen corresponding path program 1 times [2023-11-24 23:19:25,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:25,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960977578] [2023-11-24 23:19:25,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:25,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:26,232 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-11-24 23:19:26,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:26,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960977578] [2023-11-24 23:19:26,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960977578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:26,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:19:26,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:19:26,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957709658] [2023-11-24 23:19:26,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:26,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:19:26,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:26,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:19:26,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:19:26,243 INFO L87 Difference]: Start difference. First operand 92 states and 130 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-24 23:19:28,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:19:30,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:19:30,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:30,409 INFO L93 Difference]: Finished difference Result 183 states and 260 transitions. [2023-11-24 23:19:30,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:19:30,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 84 [2023-11-24 23:19:30,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:30,412 INFO L225 Difference]: With dead ends: 183 [2023-11-24 23:19:30,412 INFO L226 Difference]: Without dead ends: 93 [2023-11-24 23:19:30,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:19:30,415 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:30,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 231 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 2 Unknown, 0 Unchecked, 4.1s Time] [2023-11-24 23:19:30,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-24 23:19:30,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-11-24 23:19:30,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-24 23:19:30,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 131 transitions. [2023-11-24 23:19:30,433 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 131 transitions. Word has length 84 [2023-11-24 23:19:30,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:30,434 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 131 transitions. [2023-11-24 23:19:30,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-24 23:19:30,434 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 131 transitions. [2023-11-24 23:19:30,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-24 23:19:30,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:30,437 INFO L195 NwaCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:30,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:19:30,438 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:19:30,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:30,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1025367861, now seen corresponding path program 1 times [2023-11-24 23:19:30,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:30,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598319507] [2023-11-24 23:19:30,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:30,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-11-24 23:19:30,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:30,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598319507] [2023-11-24 23:19:30,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598319507] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:19:30,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501067972] [2023-11-24 23:19:30,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:30,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:19:30,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:19:30,904 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:19:30,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:19:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:31,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:19:31,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:19:31,473 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-11-24 23:19:31,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:19:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-11-24 23:19:31,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501067972] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:19:31,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [74246346] [2023-11-24 23:19:31,568 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-11-24 23:19:31,569 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:19:31,572 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:19:31,578 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:19:31,578 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:19:58,266 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:20:03,102 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse37 (+ 5 |c_~#__CS_thread_status~0.offset|)) (.cse27 (+ 8 |c_~#__CS_thread_status~0.offset|)) (.cse7 (+ |c_~#flag1~0.offset| 4)) (.cse10 (+ |c_~#__CS_thread_lockedon~0.offset| 32)) (.cse11 (+ 32 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset|)) (.cse13 (+ |c_~#__CS_thread_lockedon~0.offset| 20)) (.cse14 (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 20)) (.cse16 (+ |c_~#__CS_thread_lockedon~0.offset| 28)) (.cse17 (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 28)) (.cse19 (+ |c_~#__CS_thread_lockedon~0.offset| 16)) (.cse20 (+ 16 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset|)) (.cse22 (+ |c_~#__CS_thread_lockedon~0.offset| 24)) (.cse23 (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 24)) (.cse24 (+ |c_~#__CS_thread_lockedon~0.offset| 12)) (.cse25 (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 12)) (.cse4 (+ 6 |c_~#__CS_thread_status~0.offset|)) (.cse1 (+ |c_~#__CS_thread_status~0.offset| 4)) (.cse29 (+ |c_~#flag2~0.offset| 8)) (.cse35 (+ 7 |c_~#__CS_thread_status~0.offset|)) (.cse5 (+ 3 |c_~#__CS_thread_status~0.offset|)) (.cse31 (+ 4 |c_~#x~0.offset|)) (.cse34 (+ |c_~#flag1~0.offset| 8)) (.cse33 (+ 8 |c_~#x~0.offset|)) (.cse30 (+ |c_~#flag2~0.offset| 4))) (and (exists ((v_~__CS_thread~0.base_40 (Array Int Int))) (= c_~__CS_thread~0.base (store v_~__CS_thread~0.base_40 0 |#funAddr~main_thread.base|))) (<= 3 |c_ULTIMATE.start_main_~i~0#1|) (<= 3 |c_ULTIMATE.start_main_~j~2#1|) (exists ((|v_#memory_$Pointer$.base_97| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_96| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_99| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_98| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_107| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_95| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_106| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_94| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_105| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_104| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_103| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_102| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_101| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_100| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_231| (Array Int (Array Int Int)))) (let ((.cse0 (select |v_#memory_$Pointer$.base_104| |c_~#__CS_thread_status~0.base|)) (.cse3 (select |v_#memory_$Pointer$.base_106| |c_~#__CS_thread_status~0.base|)) (.cse28 (select |v_#memory_$Pointer$.base_99| |c_~#flag2~0.base|)) (.cse32 (select |v_#memory_$Pointer$.base_98| |c_~#x~0.base|)) (.cse8 (select |v_#memory_$Pointer$.base_97| |c_~#flag1~0.base|)) (.cse2 (select |v_#memory_$Pointer$.base_107| |c_~#__CS_thread_status~0.base|)) (.cse36 (select |v_#memory_$Pointer$.base_101| |c_~#__CS_thread_status~0.base|)) (.cse26 (select |v_#memory_$Pointer$.base_103| |c_~#__CS_thread_status~0.base|))) (and (= |v_#memory_$Pointer$.base_107| (store |v_#memory_$Pointer$.base_104| |c_~#__CS_thread_status~0.base| (store .cse0 .cse1 (select .cse2 .cse1)))) (= (store |v_#memory_$Pointer$.base_105| |c_~#__CS_thread_allocated~0.base| (store (select |v_#memory_$Pointer$.base_105| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset| (select (select |c_#memory_$Pointer$.base| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset|))) |c_#memory_$Pointer$.base|) (= |v_#memory_$Pointer$.base_94| (store |v_#memory_$Pointer$.base_100| |c_~#__CS_thread_born_round~0.base| (store (select |v_#memory_$Pointer$.base_100| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset| (select (select |v_#memory_$Pointer$.base_94| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset|)))) (= (store |v_#memory_$Pointer$.base_106| |c_~#__CS_thread_status~0.base| (store .cse3 .cse4 (select .cse0 .cse4))) |v_#memory_$Pointer$.base_104|) (= (store |v_#memory_$Pointer$.base_231| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.base_231| |c_~#__CS_thread_status~0.base|) .cse5 (select .cse3 .cse5))) |v_#memory_$Pointer$.base_106|) (= (store |v_#memory_$Pointer$.base_94| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.base_94| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset| (select (select |v_#memory_$Pointer$.base_105| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset|))) |v_#memory_$Pointer$.base_105|) (= (let ((.cse6 (store |v_#memory_$Pointer$.base_102| |c_~#__CS_thread_lockedon~0.base| (let ((.cse9 (let ((.cse12 (let ((.cse15 (let ((.cse18 (let ((.cse21 (store (select |v_#memory_$Pointer$.base_102| |c_~#__CS_thread_lockedon~0.base|) .cse24 (select (select |v_#memory_$Pointer$.base_102| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse25)))) (store .cse21 .cse22 (select (select (store |v_#memory_$Pointer$.base_102| |c_~#__CS_thread_lockedon~0.base| .cse21) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse23))))) (store .cse18 .cse19 (select (select (store |v_#memory_$Pointer$.base_102| |c_~#__CS_thread_lockedon~0.base| .cse18) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse20))))) (store .cse15 .cse16 (select (select (store |v_#memory_$Pointer$.base_102| |c_~#__CS_thread_lockedon~0.base| .cse15) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse17))))) (store .cse12 .cse13 (select (select (store |v_#memory_$Pointer$.base_102| |c_~#__CS_thread_lockedon~0.base| .cse12) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse14))))) (store .cse9 .cse10 (select (select (store |v_#memory_$Pointer$.base_102| |c_~#__CS_thread_lockedon~0.base| .cse9) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse11)))))) (store .cse6 |c_~#flag1~0.base| (store (select .cse6 |c_~#flag1~0.base|) .cse7 (select .cse8 .cse7)))) |v_#memory_$Pointer$.base_97|) (= (store |v_#memory_$Pointer$.base_103| |c_~#__CS_thread_status~0.base| (store .cse26 .cse27 (select (select |v_#memory_$Pointer$.base_102| |c_~#__CS_thread_status~0.base|) .cse27))) |v_#memory_$Pointer$.base_102|) (= (store |v_#memory_$Pointer$.base_99| |c_~#flag2~0.base| (store .cse28 .cse29 (select (select |v_#memory_$Pointer$.base_95| |c_~#flag2~0.base|) .cse29))) |v_#memory_$Pointer$.base_95|) (= (store |v_#memory_$Pointer$.base_96| |c_~#flag2~0.base| (store (select |v_#memory_$Pointer$.base_96| |c_~#flag2~0.base|) .cse30 (select .cse28 .cse30))) |v_#memory_$Pointer$.base_99|) (= (store |v_#memory_$Pointer$.base_95| |c_~#x~0.base| (store (select |v_#memory_$Pointer$.base_95| |c_~#x~0.base|) .cse31 (select .cse32 .cse31))) |v_#memory_$Pointer$.base_98|) (= (store |v_#memory_$Pointer$.base_98| |c_~#x~0.base| (store .cse32 .cse33 (select (select |v_#memory_$Pointer$.base_100| |c_~#x~0.base|) .cse33))) |v_#memory_$Pointer$.base_100|) (= (store |v_#memory_$Pointer$.base_97| |c_~#flag1~0.base| (store .cse8 .cse34 (select (select |v_#memory_$Pointer$.base_96| |c_~#flag1~0.base|) .cse34))) |v_#memory_$Pointer$.base_96|) (= (store |v_#memory_$Pointer$.base_107| |c_~#__CS_thread_status~0.base| (store .cse2 .cse35 (select .cse36 .cse35))) |v_#memory_$Pointer$.base_101|) (= |v_#memory_$Pointer$.base_103| (store |v_#memory_$Pointer$.base_101| |c_~#__CS_thread_status~0.base| (store .cse36 .cse37 (select .cse26 .cse37))))))) (= (select (select |c_#memory_int| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset|) |c_ULTIMATE.start_main_#t~mem70#1|) (exists ((v_~__CS_thread~0.offset_40 (Array Int Int))) (= (store v_~__CS_thread~0.offset_40 0 |#funAddr~main_thread.offset|) c_~__CS_thread~0.offset)) (exists ((|v_#memory_int_95| (Array Int (Array Int Int))) (|v_#memory_int_96| (Array Int (Array Int Int))) (|v_#memory_int_97| (Array Int (Array Int Int))) (|v_#memory_int_160| (Array Int (Array Int Int))) (|v_#memory_int_98| (Array Int (Array Int Int))) (|v_#memory_int_99| (Array Int (Array Int Int))) (|v_#memory_int_100| (Array Int (Array Int Int)))) (let ((.cse38 (select |v_#memory_int_100| |c_~#__CS_thread_lockedon~0.base|)) (.cse41 (select |v_#memory_int_97| |c_~#__CS_thread_lockedon~0.base|)) (.cse39 (select |v_#memory_int_96| |c_~#__CS_thread_lockedon~0.base|)) (.cse40 (select |v_#memory_int_98| |c_~#__CS_thread_lockedon~0.base|)) (.cse42 (select |v_#memory_int_95| |c_~#__CS_thread_lockedon~0.base|))) (and (= (store |v_#memory_int_100| |c_~#__CS_thread_lockedon~0.base| (store .cse38 .cse10 (select (select |v_#memory_int_99| |c_~#__CS_thread_lockedon~0.base|) .cse10))) |v_#memory_int_99|) (= (store |v_#memory_int_96| |c_~#__CS_thread_lockedon~0.base| (store .cse39 .cse13 (select .cse38 .cse13))) |v_#memory_int_100|) (= |v_#memory_int_97| (store |v_#memory_int_98| |c_~#__CS_thread_lockedon~0.base| (store .cse40 .cse19 (select .cse41 .cse19)))) (= |v_#memory_int_96| (store |v_#memory_int_97| |c_~#__CS_thread_lockedon~0.base| (store .cse41 .cse16 (select .cse39 .cse16)))) (= (store |v_#memory_int_95| |c_~#__CS_thread_lockedon~0.base| (store .cse42 .cse22 (select .cse40 .cse22))) |v_#memory_int_98|) (= |v_#memory_int_95| (let ((.cse43 (store |v_#memory_int_160| |c_~#__CS_thread_status~0.base| (let ((.cse44 (let ((.cse45 (let ((.cse46 (let ((.cse47 (let ((.cse48 (store (select |v_#memory_int_160| |c_~#__CS_thread_status~0.base|) .cse5 (select (select |v_#memory_int_160| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 3))))) (store .cse48 .cse4 (select (select (store |v_#memory_int_160| |c_~#__CS_thread_status~0.base| .cse48) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 6)))))) (store .cse47 .cse1 (select (select (store |v_#memory_int_160| |c_~#__CS_thread_status~0.base| .cse47) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 4)))))) (store .cse46 .cse35 (select (select (store |v_#memory_int_160| |c_~#__CS_thread_status~0.base| .cse46) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (+ 7 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset|)))))) (store .cse45 .cse37 (select (select (store |v_#memory_int_160| |c_~#__CS_thread_status~0.base| .cse45) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 5)))))) (store .cse44 .cse27 (select (select (store |v_#memory_int_160| |c_~#__CS_thread_status~0.base| .cse44) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 8))))))) (store .cse43 |c_~#__CS_thread_lockedon~0.base| (store (select .cse43 |c_~#__CS_thread_lockedon~0.base|) .cse24 (select .cse42 .cse24))))) (= (let ((.cse49 (let ((.cse50 (let ((.cse51 (let ((.cse52 (let ((.cse54 (store |v_#memory_int_99| |c_~#flag1~0.base| (let ((.cse56 (store (select |v_#memory_int_99| |c_~#flag1~0.base|) .cse7 (select (select |v_#memory_int_99| |c_ULTIMATE.start_main_~#__CS_cp_flag1~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~#__CS_cp_flag1~0#1.offset|))))) (store .cse56 .cse34 (select (select (store |v_#memory_int_99| |c_~#flag1~0.base| .cse56) |c_ULTIMATE.start_main_~#__CS_cp_flag1~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~#__CS_cp_flag1~0#1.offset|))))))) (store .cse54 |c_~#flag2~0.base| (let ((.cse55 (store (select .cse54 |c_~#flag2~0.base|) .cse30 (select (select .cse54 |c_ULTIMATE.start_main_~#__CS_cp_flag2~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp_flag2~0#1.offset| 4))))) (store .cse55 .cse29 (select (select (store .cse54 |c_~#flag2~0.base| .cse55) |c_ULTIMATE.start_main_~#__CS_cp_flag2~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp_flag2~0#1.offset| 8)))))))) (store .cse52 |c_~#x~0.base| (let ((.cse53 (store (select .cse52 |c_~#x~0.base|) .cse31 (select (select .cse52 |c_ULTIMATE.start_main_~#__CS_cp_x~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~#__CS_cp_x~0#1.offset|))))) (store .cse53 .cse33 (select (select (store .cse52 |c_~#x~0.base| .cse53) |c_ULTIMATE.start_main_~#__CS_cp_x~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~#__CS_cp_x~0#1.offset|)))))))) (store .cse51 |c_~#__CS_thread_born_round~0.base| (store (select .cse51 |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset| 0))))) (store .cse50 |c_~#__CS_thread_status~0.base| (store (select .cse50 |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset| c_~__THREAD_RUNNING~0))))) (store .cse49 |c_~#__CS_thread_allocated~0.base| (store (select .cse49 |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset| 1))) |c_#memory_int|)))) (= c_~__CS_round~0 0) (= c_~__CS_thread_index~0 0) (exists ((|v_#memory_$Pointer$.offset_104| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_105| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_106| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_107| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_95| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_94| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_97| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_96| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_99| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_98| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_231| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_100| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_101| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_102| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_103| (Array Int (Array Int Int)))) (let ((.cse58 (select |v_#memory_$Pointer$.offset_104| |c_~#__CS_thread_status~0.base|)) (.cse67 (select |v_#memory_$Pointer$.offset_95| |c_~#__CS_thread_status~0.base|)) (.cse68 (select |v_#memory_$Pointer$.offset_94| |c_~#__CS_thread_status~0.base|)) (.cse57 (select |v_#memory_$Pointer$.offset_102| |c_~#__CS_thread_status~0.base|)) (.cse66 (select |v_#memory_$Pointer$.offset_107| |c_~#__CS_thread_status~0.base|)) (.cse60 (select |v_#memory_$Pointer$.offset_101| |c_~#flag1~0.base|)) (.cse70 (select |v_#memory_$Pointer$.offset_97| |c_~#x~0.base|)) (.cse69 (select |v_#memory_$Pointer$.offset_99| |c_~#flag2~0.base|))) (and (= |v_#memory_$Pointer$.offset_104| (store |v_#memory_$Pointer$.offset_102| |c_~#__CS_thread_status~0.base| (store .cse57 .cse37 (select .cse58 .cse37)))) (= (store |v_#memory_$Pointer$.offset_104| |c_~#__CS_thread_status~0.base| (store .cse58 .cse27 (select (select |v_#memory_$Pointer$.offset_103| |c_~#__CS_thread_status~0.base|) .cse27))) |v_#memory_$Pointer$.offset_103|) (= |v_#memory_$Pointer$.offset_101| (let ((.cse59 (store |v_#memory_$Pointer$.offset_103| |c_~#__CS_thread_lockedon~0.base| (let ((.cse61 (let ((.cse62 (let ((.cse63 (let ((.cse64 (let ((.cse65 (store (select |v_#memory_$Pointer$.offset_103| |c_~#__CS_thread_lockedon~0.base|) .cse24 (select (select |v_#memory_$Pointer$.offset_103| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse25)))) (store .cse65 .cse22 (select (select (store |v_#memory_$Pointer$.offset_103| |c_~#__CS_thread_lockedon~0.base| .cse65) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse23))))) (store .cse64 .cse19 (select (select (store |v_#memory_$Pointer$.offset_103| |c_~#__CS_thread_lockedon~0.base| .cse64) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse20))))) (store .cse63 .cse16 (select (select (store |v_#memory_$Pointer$.offset_103| |c_~#__CS_thread_lockedon~0.base| .cse63) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse17))))) (store .cse62 .cse13 (select (select (store |v_#memory_$Pointer$.offset_103| |c_~#__CS_thread_lockedon~0.base| .cse62) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse14))))) (store .cse61 .cse10 (select (select (store |v_#memory_$Pointer$.offset_103| |c_~#__CS_thread_lockedon~0.base| .cse61) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse11)))))) (store .cse59 |c_~#flag1~0.base| (store (select .cse59 |c_~#flag1~0.base|) .cse7 (select .cse60 .cse7))))) (= (store |v_#memory_$Pointer$.offset_107| |c_~#__CS_thread_status~0.base| (store .cse66 .cse4 (select .cse67 .cse4))) |v_#memory_$Pointer$.offset_95|) (= (store |v_#memory_$Pointer$.offset_95| |c_~#__CS_thread_status~0.base| (store .cse67 .cse1 (select .cse68 .cse1))) |v_#memory_$Pointer$.offset_94|) (= (store |v_#memory_$Pointer$.offset_99| |c_~#flag2~0.base| (store .cse69 .cse29 (select (select |v_#memory_$Pointer$.offset_98| |c_~#flag2~0.base|) .cse29))) |v_#memory_$Pointer$.offset_98|) (= (store |v_#memory_$Pointer$.offset_94| |c_~#__CS_thread_status~0.base| (store .cse68 .cse35 (select .cse57 .cse35))) |v_#memory_$Pointer$.offset_102|) (= (store |v_#memory_$Pointer$.offset_231| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.offset_231| |c_~#__CS_thread_status~0.base|) .cse5 (select .cse66 .cse5))) |v_#memory_$Pointer$.offset_107|) (= (store |v_#memory_$Pointer$.offset_98| |c_~#x~0.base| (store (select |v_#memory_$Pointer$.offset_98| |c_~#x~0.base|) .cse31 (select .cse70 .cse31))) |v_#memory_$Pointer$.offset_97|) (= |v_#memory_$Pointer$.offset_106| (store |v_#memory_$Pointer$.offset_105| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.offset_105| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset| (select (select |v_#memory_$Pointer$.offset_106| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset|)))) (= |c_#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_106| |c_~#__CS_thread_allocated~0.base| (store (select |v_#memory_$Pointer$.offset_106| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset| (select (select |c_#memory_$Pointer$.offset| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset|)))) (= (store |v_#memory_$Pointer$.offset_101| |c_~#flag1~0.base| (store .cse60 .cse34 (select (select |v_#memory_$Pointer$.offset_100| |c_~#flag1~0.base|) .cse34))) |v_#memory_$Pointer$.offset_100|) (= (store |v_#memory_$Pointer$.offset_96| |c_~#__CS_thread_born_round~0.base| (store (select |v_#memory_$Pointer$.offset_96| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset| (select (select |v_#memory_$Pointer$.offset_105| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset|))) |v_#memory_$Pointer$.offset_105|) (= (store |v_#memory_$Pointer$.offset_97| |c_~#x~0.base| (store .cse70 .cse33 (select (select |v_#memory_$Pointer$.offset_96| |c_~#x~0.base|) .cse33))) |v_#memory_$Pointer$.offset_96|) (= (store |v_#memory_$Pointer$.offset_100| |c_~#flag2~0.base| (store (select |v_#memory_$Pointer$.offset_100| |c_~#flag2~0.base|) .cse30 (select .cse69 .cse30))) |v_#memory_$Pointer$.offset_99|)))))) is different from false [2023-11-24 23:20:03,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [74246346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:03,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:20:03,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4] total 8 [2023-11-24 23:20:03,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586588349] [2023-11-24 23:20:03,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:03,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:20:03,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:03,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:20:03,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=26, Unknown=1, NotChecked=10, Total=56 [2023-11-24 23:20:03,118 INFO L87 Difference]: Start difference. First operand 93 states and 131 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-24 23:20:05,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 23:20:07,241 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse14 (= c_~__CS_round~0 0)) (.cse15 (= c_~__CS_thread_index~0 0)) (.cse53 (+ 5 |c_~#__CS_thread_status~0.offset|)) (.cse43 (+ 8 |c_~#__CS_thread_status~0.offset|)) (.cse23 (+ |c_~#flag1~0.offset| 4)) (.cse26 (+ |c_~#__CS_thread_lockedon~0.offset| 32)) (.cse27 (+ 32 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset|)) (.cse29 (+ |c_~#__CS_thread_lockedon~0.offset| 20)) (.cse30 (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 20)) (.cse32 (+ |c_~#__CS_thread_lockedon~0.offset| 28)) (.cse33 (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 28)) (.cse35 (+ |c_~#__CS_thread_lockedon~0.offset| 16)) (.cse36 (+ 16 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset|)) (.cse38 (+ |c_~#__CS_thread_lockedon~0.offset| 24)) (.cse39 (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 24)) (.cse40 (+ |c_~#__CS_thread_lockedon~0.offset| 12)) (.cse41 (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 12)) (.cse20 (+ 6 |c_~#__CS_thread_status~0.offset|)) (.cse17 (+ |c_~#__CS_thread_status~0.offset| 4)) (.cse45 (+ |c_~#flag2~0.offset| 8)) (.cse51 (+ 7 |c_~#__CS_thread_status~0.offset|)) (.cse21 (+ 3 |c_~#__CS_thread_status~0.offset|)) (.cse47 (+ 4 |c_~#x~0.offset|)) (.cse50 (+ |c_~#flag1~0.offset| 8)) (.cse49 (+ 8 |c_~#x~0.offset|)) (.cse46 (+ |c_~#flag2~0.offset| 4))) (and (exists ((v_~__CS_thread~0.base_40 (Array Int Int))) (= c_~__CS_thread~0.base (store v_~__CS_thread~0.base_40 0 |#funAddr~main_thread.base|))) (<= 3 |c_ULTIMATE.start_main_~i~0#1|) (<= 3 |c_ULTIMATE.start_main_~j~2#1|) (or (let ((.cse6 (select |c_#memory_int| 4)) (.cse13 (select |c_#memory_int| 1)) (.cse5 (select |c_#memory_int| 3)) (.cse1 (select |c_#memory_int| 5)) (.cse12 (select |c_#memory_int| 7)) (.cse4 (select |c_#memory_$Pointer$.offset| 6)) (.cse3 (select |c_#memory_int| 9)) (.cse2 (+ |c_#StackHeapBarrier| 1)) (.cse0 (select |c_#memory_$Pointer$.base| 6)) (.cse11 (select |c_#memory_int| 8))) (and (= (select .cse0 28) 0) (= |c_~#flag2~0.offset| 0) (exists ((v_~__CS_u~0.x_9 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.init_#t~nondet122#1_7| Int) (|v_ULTIMATE.start_ULTIMATE.init_#t~nondet121#1_7| Int)) (= (store (store (store v_~__CS_u~0.x_9 0 |v_ULTIMATE.start_ULTIMATE.init_#t~nondet121#1_7|) 1 |v_ULTIMATE.start_ULTIMATE.init_#t~nondet122#1_7|) 2 (select c_~__CS_u~0.x 2)) c_~__CS_u~0.x)) (exists ((v_~__CS_thread~0.base_39 (Array Int Int))) (= (store (store (store v_~__CS_thread~0.base_39 0 0) 1 0) 2 0) c_~__CS_thread~0.base)) (= (select .cse1 2) 0) (= (select .cse1 5) 0) (= 2 c_~__THREAD_FINISHED~0) (= |c_~#__CS_thread_born_round~0.offset| 0) (= (select .cse1 8) 0) (= c_~__CS_ret_FINISHED~0 4) (= 5 |c_~#__CS_thread_status~0.base|) (= 6 |c_~#__CS_thread_lockedon~0.base|) (<= .cse2 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (= 2 c_~__CS_ret_ERROR~0) (= (select .cse3 0) 0) (= 0 (select .cse4 16)) (= (select .cse5 0) 0) (= (select .cse6 0) 0) (= c_~__CS_ret~0 0) (<= 1 |c_#StackHeapBarrier|) (exists ((|v_#valid_49| (Array Int Int))) (let ((.cse10 (store |v_#valid_49| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| 1))) (let ((.cse9 (store .cse10 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| 1))) (let ((.cse8 (store .cse9 |c_ULTIMATE.start_main_~#__CS_cp_flag1~0#1.base| 1))) (let ((.cse7 (store .cse8 |c_ULTIMATE.start_main_~#__CS_cp_flag2~0#1.base| 1))) (and (= (select |v_#valid_49| 1) 1) (= (select |v_#valid_49| 6) 1) (= (select |v_#valid_49| 0) 0) (= (select |v_#valid_49| 5) 1) (= 0 (select |v_#valid_49| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|)) (= |c_#valid| (store .cse7 |c_ULTIMATE.start_main_~#__CS_cp_x~0#1.base| 1)) (= (select |v_#valid_49| 9) 1) (= (select .cse8 |c_ULTIMATE.start_main_~#__CS_cp_flag2~0#1.base|) 0) (= (select |v_#valid_49| 3) 1) (= (select |v_#valid_49| 7) 1) (= (select .cse7 |c_ULTIMATE.start_main_~#__CS_cp_x~0#1.base|) 0) (= (select |v_#valid_49| 8) 1) (= (select .cse9 |c_ULTIMATE.start_main_~#__CS_cp_flag1~0#1.base|) 0) (= (select .cse10 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) 0) (= (select |v_#valid_49| 2) 1) (= (select |v_#valid_49| 4) 1))))))) (= (select .cse11 4) 0) (= (select .cse12 0) 0) (= |c_ULTIMATE.start_main_~i~0#1| 0) (= (select .cse0 12) 0) (exists ((v_~__CS_u~0.flag2_9 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.init_#t~nondet119#1_7| Int) (|v_ULTIMATE.start_ULTIMATE.init_#t~nondet118#1_7| Int)) (= c_~__CS_u~0.flag2 (store (store (store v_~__CS_u~0.flag2_9 0 |v_ULTIMATE.start_ULTIMATE.init_#t~nondet118#1_7|) 1 |v_ULTIMATE.start_ULTIMATE.init_#t~nondet119#1_7|) 2 (select c_~__CS_u~0.flag2 2)))) (= (select .cse4 32) 0) (= |c_~#__CS_thread_born_round~0.base| 4) (= 0 |c_ULTIMATE.start_main_~#__CS_cp_x~0#1.offset|) (= (select .cse5 1) 0) (exists ((v_~__CS_u~0.flag1_9 (Array Int Int))) (= (store (store (store v_~__CS_u~0.flag1_9 0 0) 1 0) 2 0) c_~__CS_u~0.flag1)) (<= .cse2 |c_ULTIMATE.start_main_~#__CS_cp_flag1~0#1.base|) (<= .cse2 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) (= |c_~#flag1~0.offset| 0) (= 7 |c_~#flag1~0.base|) (= |c_ULTIMATE.start_main_~#__CS_cp_flag2~0#1.offset| 0) (= (select .cse1 4) 0) (= (select .cse1 7) 0) (= 3 |c_~#__CS_thread_allocated~0.base|) (= (select .cse13 1) 0) (<= .cse2 |c_ULTIMATE.start_main_~#__CS_cp_x~0#1.base|) (= (select .cse0 0) 0) (= (select .cse3 4) 0) (= (select .cse4 28) 0) (= (select .cse1 3) 0) (= (select .cse0 4) 0) (= (select .cse6 1) 0) (= c_~__CS_error~0 0) (= (select .cse1 6) 0) (= c_~__THREAD_UNUSED~0 0) (= (select .cse4 12) 0) (= (select .cse6 2) 0) (= (select .cse12 4) 0) (= (select .cse4 4) 0) (= 0 |c_ULTIMATE.start_main_~#__CS_cp_flag1~0#1.offset|) (= (select .cse1 0) 0) (= (select .cse4 24) 0) (= 0 |c_~#x~0.offset|) (= (select .cse4 20) 0) (= (select .cse0 16) 0) (= 1 c_~__THREAD_RUNNING~0) (= |c_~#__CS_thread_status~0.offset| 0) (exists ((|v_#length_21| (Array Int Int))) (and (= (select |v_#length_21| 2) 15) (= 3 (select |v_#length_21| 4)) (= (select |v_#length_21| 6) 36) (= (select |v_#length_21| 9) 12) (= 2 (select |v_#length_21| 1)) (= (select |v_#length_21| 5) 9) (= 3 (select |v_#length_21| 3)) (= 12 (select |v_#length_21| 7)) (= (select |v_#length_21| 8) 12) (= |c_#length| (store (store (store (store (store |v_#length_21| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| 9) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| 36) |c_ULTIMATE.start_main_~#__CS_cp_flag1~0#1.base| 12) |c_ULTIMATE.start_main_~#__CS_cp_flag2~0#1.base| 12) |c_ULTIMATE.start_main_~#__CS_cp_x~0#1.base| 12)))) (= 9 |c_~#x~0.base|) (= 48 (select .cse13 0)) (= 0 (select .cse0 20)) (= (select .cse0 32) 0) (= (select .cse5 2) 0) (= (select .cse0 8) 0) (= 8 |c_~#flag2~0.base|) (= (select .cse4 0) 0) (= (select .cse1 1) 0) (= 0 (select .cse12 8)) (= (select .cse4 8) 0) (= |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 0) (= (select .cse3 8) 0) .cse14 .cse15 (= |c_~#__CS_thread_allocated~0.offset| 0) (<= .cse2 |c_ULTIMATE.start_main_~#__CS_cp_flag2~0#1.base|) (= c_~__CS_ret_PREEMPTED~0 1) (exists ((v_~__CS_thread~0.offset_39 (Array Int Int))) (= (store (store (store v_~__CS_thread~0.offset_39 0 0) 1 0) 2 0) c_~__CS_thread~0.offset)) (= |c_~#__CS_thread_lockedon~0.offset| 0) (= (select .cse0 24) 0) (= (select .cse11 0) 0) (= |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 0) (= (select .cse11 8) 0))) (< 2 |c_ULTIMATE.start_main_~j~2#1|)) (exists ((|v_#memory_$Pointer$.base_97| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_96| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_99| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_98| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_107| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_95| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_106| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_94| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_105| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_104| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_103| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_102| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_101| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_100| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_231| (Array Int (Array Int Int)))) (let ((.cse16 (select |v_#memory_$Pointer$.base_104| |c_~#__CS_thread_status~0.base|)) (.cse19 (select |v_#memory_$Pointer$.base_106| |c_~#__CS_thread_status~0.base|)) (.cse44 (select |v_#memory_$Pointer$.base_99| |c_~#flag2~0.base|)) (.cse48 (select |v_#memory_$Pointer$.base_98| |c_~#x~0.base|)) (.cse24 (select |v_#memory_$Pointer$.base_97| |c_~#flag1~0.base|)) (.cse18 (select |v_#memory_$Pointer$.base_107| |c_~#__CS_thread_status~0.base|)) (.cse52 (select |v_#memory_$Pointer$.base_101| |c_~#__CS_thread_status~0.base|)) (.cse42 (select |v_#memory_$Pointer$.base_103| |c_~#__CS_thread_status~0.base|))) (and (= |v_#memory_$Pointer$.base_107| (store |v_#memory_$Pointer$.base_104| |c_~#__CS_thread_status~0.base| (store .cse16 .cse17 (select .cse18 .cse17)))) (= (store |v_#memory_$Pointer$.base_105| |c_~#__CS_thread_allocated~0.base| (store (select |v_#memory_$Pointer$.base_105| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset| (select (select |c_#memory_$Pointer$.base| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset|))) |c_#memory_$Pointer$.base|) (= |v_#memory_$Pointer$.base_94| (store |v_#memory_$Pointer$.base_100| |c_~#__CS_thread_born_round~0.base| (store (select |v_#memory_$Pointer$.base_100| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset| (select (select |v_#memory_$Pointer$.base_94| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset|)))) (= (store |v_#memory_$Pointer$.base_106| |c_~#__CS_thread_status~0.base| (store .cse19 .cse20 (select .cse16 .cse20))) |v_#memory_$Pointer$.base_104|) (= (store |v_#memory_$Pointer$.base_231| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.base_231| |c_~#__CS_thread_status~0.base|) .cse21 (select .cse19 .cse21))) |v_#memory_$Pointer$.base_106|) (= (store |v_#memory_$Pointer$.base_94| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.base_94| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset| (select (select |v_#memory_$Pointer$.base_105| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset|))) |v_#memory_$Pointer$.base_105|) (= (let ((.cse22 (store |v_#memory_$Pointer$.base_102| |c_~#__CS_thread_lockedon~0.base| (let ((.cse25 (let ((.cse28 (let ((.cse31 (let ((.cse34 (let ((.cse37 (store (select |v_#memory_$Pointer$.base_102| |c_~#__CS_thread_lockedon~0.base|) .cse40 (select (select |v_#memory_$Pointer$.base_102| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse41)))) (store .cse37 .cse38 (select (select (store |v_#memory_$Pointer$.base_102| |c_~#__CS_thread_lockedon~0.base| .cse37) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse39))))) (store .cse34 .cse35 (select (select (store |v_#memory_$Pointer$.base_102| |c_~#__CS_thread_lockedon~0.base| .cse34) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse36))))) (store .cse31 .cse32 (select (select (store |v_#memory_$Pointer$.base_102| |c_~#__CS_thread_lockedon~0.base| .cse31) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse33))))) (store .cse28 .cse29 (select (select (store |v_#memory_$Pointer$.base_102| |c_~#__CS_thread_lockedon~0.base| .cse28) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse30))))) (store .cse25 .cse26 (select (select (store |v_#memory_$Pointer$.base_102| |c_~#__CS_thread_lockedon~0.base| .cse25) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse27)))))) (store .cse22 |c_~#flag1~0.base| (store (select .cse22 |c_~#flag1~0.base|) .cse23 (select .cse24 .cse23)))) |v_#memory_$Pointer$.base_97|) (= (store |v_#memory_$Pointer$.base_103| |c_~#__CS_thread_status~0.base| (store .cse42 .cse43 (select (select |v_#memory_$Pointer$.base_102| |c_~#__CS_thread_status~0.base|) .cse43))) |v_#memory_$Pointer$.base_102|) (= (store |v_#memory_$Pointer$.base_99| |c_~#flag2~0.base| (store .cse44 .cse45 (select (select |v_#memory_$Pointer$.base_95| |c_~#flag2~0.base|) .cse45))) |v_#memory_$Pointer$.base_95|) (= (store |v_#memory_$Pointer$.base_96| |c_~#flag2~0.base| (store (select |v_#memory_$Pointer$.base_96| |c_~#flag2~0.base|) .cse46 (select .cse44 .cse46))) |v_#memory_$Pointer$.base_99|) (= (store |v_#memory_$Pointer$.base_95| |c_~#x~0.base| (store (select |v_#memory_$Pointer$.base_95| |c_~#x~0.base|) .cse47 (select .cse48 .cse47))) |v_#memory_$Pointer$.base_98|) (= (store |v_#memory_$Pointer$.base_98| |c_~#x~0.base| (store .cse48 .cse49 (select (select |v_#memory_$Pointer$.base_100| |c_~#x~0.base|) .cse49))) |v_#memory_$Pointer$.base_100|) (= (store |v_#memory_$Pointer$.base_97| |c_~#flag1~0.base| (store .cse24 .cse50 (select (select |v_#memory_$Pointer$.base_96| |c_~#flag1~0.base|) .cse50))) |v_#memory_$Pointer$.base_96|) (= (store |v_#memory_$Pointer$.base_107| |c_~#__CS_thread_status~0.base| (store .cse18 .cse51 (select .cse52 .cse51))) |v_#memory_$Pointer$.base_101|) (= |v_#memory_$Pointer$.base_103| (store |v_#memory_$Pointer$.base_101| |c_~#__CS_thread_status~0.base| (store .cse52 .cse53 (select .cse42 .cse53))))))) (= (select (select |c_#memory_int| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset|) |c_ULTIMATE.start_main_#t~mem70#1|) (exists ((v_~__CS_thread~0.offset_40 (Array Int Int))) (= (store v_~__CS_thread~0.offset_40 0 |#funAddr~main_thread.offset|) c_~__CS_thread~0.offset)) (exists ((|v_#memory_int_95| (Array Int (Array Int Int))) (|v_#memory_int_96| (Array Int (Array Int Int))) (|v_#memory_int_97| (Array Int (Array Int Int))) (|v_#memory_int_160| (Array Int (Array Int Int))) (|v_#memory_int_98| (Array Int (Array Int Int))) (|v_#memory_int_99| (Array Int (Array Int Int))) (|v_#memory_int_100| (Array Int (Array Int Int)))) (let ((.cse54 (select |v_#memory_int_100| |c_~#__CS_thread_lockedon~0.base|)) (.cse57 (select |v_#memory_int_97| |c_~#__CS_thread_lockedon~0.base|)) (.cse55 (select |v_#memory_int_96| |c_~#__CS_thread_lockedon~0.base|)) (.cse56 (select |v_#memory_int_98| |c_~#__CS_thread_lockedon~0.base|)) (.cse58 (select |v_#memory_int_95| |c_~#__CS_thread_lockedon~0.base|))) (and (= (store |v_#memory_int_100| |c_~#__CS_thread_lockedon~0.base| (store .cse54 .cse26 (select (select |v_#memory_int_99| |c_~#__CS_thread_lockedon~0.base|) .cse26))) |v_#memory_int_99|) (= (store |v_#memory_int_96| |c_~#__CS_thread_lockedon~0.base| (store .cse55 .cse29 (select .cse54 .cse29))) |v_#memory_int_100|) (= |v_#memory_int_97| (store |v_#memory_int_98| |c_~#__CS_thread_lockedon~0.base| (store .cse56 .cse35 (select .cse57 .cse35)))) (= |v_#memory_int_96| (store |v_#memory_int_97| |c_~#__CS_thread_lockedon~0.base| (store .cse57 .cse32 (select .cse55 .cse32)))) (= (store |v_#memory_int_95| |c_~#__CS_thread_lockedon~0.base| (store .cse58 .cse38 (select .cse56 .cse38))) |v_#memory_int_98|) (= |v_#memory_int_95| (let ((.cse59 (store |v_#memory_int_160| |c_~#__CS_thread_status~0.base| (let ((.cse60 (let ((.cse61 (let ((.cse62 (let ((.cse63 (let ((.cse64 (store (select |v_#memory_int_160| |c_~#__CS_thread_status~0.base|) .cse21 (select (select |v_#memory_int_160| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 3))))) (store .cse64 .cse20 (select (select (store |v_#memory_int_160| |c_~#__CS_thread_status~0.base| .cse64) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 6)))))) (store .cse63 .cse17 (select (select (store |v_#memory_int_160| |c_~#__CS_thread_status~0.base| .cse63) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 4)))))) (store .cse62 .cse51 (select (select (store |v_#memory_int_160| |c_~#__CS_thread_status~0.base| .cse62) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (+ 7 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset|)))))) (store .cse61 .cse53 (select (select (store |v_#memory_int_160| |c_~#__CS_thread_status~0.base| .cse61) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 5)))))) (store .cse60 .cse43 (select (select (store |v_#memory_int_160| |c_~#__CS_thread_status~0.base| .cse60) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 8))))))) (store .cse59 |c_~#__CS_thread_lockedon~0.base| (store (select .cse59 |c_~#__CS_thread_lockedon~0.base|) .cse40 (select .cse58 .cse40))))) (= (let ((.cse65 (let ((.cse66 (let ((.cse67 (let ((.cse68 (let ((.cse70 (store |v_#memory_int_99| |c_~#flag1~0.base| (let ((.cse72 (store (select |v_#memory_int_99| |c_~#flag1~0.base|) .cse23 (select (select |v_#memory_int_99| |c_ULTIMATE.start_main_~#__CS_cp_flag1~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~#__CS_cp_flag1~0#1.offset|))))) (store .cse72 .cse50 (select (select (store |v_#memory_int_99| |c_~#flag1~0.base| .cse72) |c_ULTIMATE.start_main_~#__CS_cp_flag1~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~#__CS_cp_flag1~0#1.offset|))))))) (store .cse70 |c_~#flag2~0.base| (let ((.cse71 (store (select .cse70 |c_~#flag2~0.base|) .cse46 (select (select .cse70 |c_ULTIMATE.start_main_~#__CS_cp_flag2~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp_flag2~0#1.offset| 4))))) (store .cse71 .cse45 (select (select (store .cse70 |c_~#flag2~0.base| .cse71) |c_ULTIMATE.start_main_~#__CS_cp_flag2~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp_flag2~0#1.offset| 8)))))))) (store .cse68 |c_~#x~0.base| (let ((.cse69 (store (select .cse68 |c_~#x~0.base|) .cse47 (select (select .cse68 |c_ULTIMATE.start_main_~#__CS_cp_x~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~#__CS_cp_x~0#1.offset|))))) (store .cse69 .cse49 (select (select (store .cse68 |c_~#x~0.base| .cse69) |c_ULTIMATE.start_main_~#__CS_cp_x~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~#__CS_cp_x~0#1.offset|)))))))) (store .cse67 |c_~#__CS_thread_born_round~0.base| (store (select .cse67 |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset| 0))))) (store .cse66 |c_~#__CS_thread_status~0.base| (store (select .cse66 |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset| c_~__THREAD_RUNNING~0))))) (store .cse65 |c_~#__CS_thread_allocated~0.base| (store (select .cse65 |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset| 1))) |c_#memory_int|)))) .cse14 .cse15 (exists ((|v_#memory_$Pointer$.offset_104| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_105| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_106| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_107| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_95| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_94| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_97| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_96| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_99| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_98| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_231| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_100| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_101| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_102| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_103| (Array Int (Array Int Int)))) (let ((.cse74 (select |v_#memory_$Pointer$.offset_104| |c_~#__CS_thread_status~0.base|)) (.cse83 (select |v_#memory_$Pointer$.offset_95| |c_~#__CS_thread_status~0.base|)) (.cse84 (select |v_#memory_$Pointer$.offset_94| |c_~#__CS_thread_status~0.base|)) (.cse73 (select |v_#memory_$Pointer$.offset_102| |c_~#__CS_thread_status~0.base|)) (.cse82 (select |v_#memory_$Pointer$.offset_107| |c_~#__CS_thread_status~0.base|)) (.cse76 (select |v_#memory_$Pointer$.offset_101| |c_~#flag1~0.base|)) (.cse86 (select |v_#memory_$Pointer$.offset_97| |c_~#x~0.base|)) (.cse85 (select |v_#memory_$Pointer$.offset_99| |c_~#flag2~0.base|))) (and (= |v_#memory_$Pointer$.offset_104| (store |v_#memory_$Pointer$.offset_102| |c_~#__CS_thread_status~0.base| (store .cse73 .cse53 (select .cse74 .cse53)))) (= (store |v_#memory_$Pointer$.offset_104| |c_~#__CS_thread_status~0.base| (store .cse74 .cse43 (select (select |v_#memory_$Pointer$.offset_103| |c_~#__CS_thread_status~0.base|) .cse43))) |v_#memory_$Pointer$.offset_103|) (= |v_#memory_$Pointer$.offset_101| (let ((.cse75 (store |v_#memory_$Pointer$.offset_103| |c_~#__CS_thread_lockedon~0.base| (let ((.cse77 (let ((.cse78 (let ((.cse79 (let ((.cse80 (let ((.cse81 (store (select |v_#memory_$Pointer$.offset_103| |c_~#__CS_thread_lockedon~0.base|) .cse40 (select (select |v_#memory_$Pointer$.offset_103| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse41)))) (store .cse81 .cse38 (select (select (store |v_#memory_$Pointer$.offset_103| |c_~#__CS_thread_lockedon~0.base| .cse81) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse39))))) (store .cse80 .cse35 (select (select (store |v_#memory_$Pointer$.offset_103| |c_~#__CS_thread_lockedon~0.base| .cse80) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse36))))) (store .cse79 .cse32 (select (select (store |v_#memory_$Pointer$.offset_103| |c_~#__CS_thread_lockedon~0.base| .cse79) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse33))))) (store .cse78 .cse29 (select (select (store |v_#memory_$Pointer$.offset_103| |c_~#__CS_thread_lockedon~0.base| .cse78) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse30))))) (store .cse77 .cse26 (select (select (store |v_#memory_$Pointer$.offset_103| |c_~#__CS_thread_lockedon~0.base| .cse77) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse27)))))) (store .cse75 |c_~#flag1~0.base| (store (select .cse75 |c_~#flag1~0.base|) .cse23 (select .cse76 .cse23))))) (= (store |v_#memory_$Pointer$.offset_107| |c_~#__CS_thread_status~0.base| (store .cse82 .cse20 (select .cse83 .cse20))) |v_#memory_$Pointer$.offset_95|) (= (store |v_#memory_$Pointer$.offset_95| |c_~#__CS_thread_status~0.base| (store .cse83 .cse17 (select .cse84 .cse17))) |v_#memory_$Pointer$.offset_94|) (= (store |v_#memory_$Pointer$.offset_99| |c_~#flag2~0.base| (store .cse85 .cse45 (select (select |v_#memory_$Pointer$.offset_98| |c_~#flag2~0.base|) .cse45))) |v_#memory_$Pointer$.offset_98|) (= (store |v_#memory_$Pointer$.offset_94| |c_~#__CS_thread_status~0.base| (store .cse84 .cse51 (select .cse73 .cse51))) |v_#memory_$Pointer$.offset_102|) (= (store |v_#memory_$Pointer$.offset_231| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.offset_231| |c_~#__CS_thread_status~0.base|) .cse21 (select .cse82 .cse21))) |v_#memory_$Pointer$.offset_107|) (= (store |v_#memory_$Pointer$.offset_98| |c_~#x~0.base| (store (select |v_#memory_$Pointer$.offset_98| |c_~#x~0.base|) .cse47 (select .cse86 .cse47))) |v_#memory_$Pointer$.offset_97|) (= |v_#memory_$Pointer$.offset_106| (store |v_#memory_$Pointer$.offset_105| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.offset_105| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset| (select (select |v_#memory_$Pointer$.offset_106| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset|)))) (= |c_#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_106| |c_~#__CS_thread_allocated~0.base| (store (select |v_#memory_$Pointer$.offset_106| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset| (select (select |c_#memory_$Pointer$.offset| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset|)))) (= (store |v_#memory_$Pointer$.offset_101| |c_~#flag1~0.base| (store .cse76 .cse50 (select (select |v_#memory_$Pointer$.offset_100| |c_~#flag1~0.base|) .cse50))) |v_#memory_$Pointer$.offset_100|) (= (store |v_#memory_$Pointer$.offset_96| |c_~#__CS_thread_born_round~0.base| (store (select |v_#memory_$Pointer$.offset_96| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset| (select (select |v_#memory_$Pointer$.offset_105| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset|))) |v_#memory_$Pointer$.offset_105|) (= (store |v_#memory_$Pointer$.offset_97| |c_~#x~0.base| (store .cse86 .cse49 (select (select |v_#memory_$Pointer$.offset_96| |c_~#x~0.base|) .cse49))) |v_#memory_$Pointer$.offset_96|) (= (store |v_#memory_$Pointer$.offset_100| |c_~#flag2~0.base| (store (select |v_#memory_$Pointer$.offset_100| |c_~#flag2~0.base|) .cse46 (select .cse85 .cse46))) |v_#memory_$Pointer$.offset_99|)))))) is different from false [2023-11-24 23:20:07,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:07,821 INFO L93 Difference]: Finished difference Result 178 states and 250 transitions. [2023-11-24 23:20:07,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:20:07,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 85 [2023-11-24 23:20:07,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:07,823 INFO L225 Difference]: With dead ends: 178 [2023-11-24 23:20:07,823 INFO L226 Difference]: Without dead ends: 93 [2023-11-24 23:20:07,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=21, Invalid=27, Unknown=2, NotChecked=22, Total=72 [2023-11-24 23:20:07,826 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 0 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:07,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 267 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 1 Unknown, 46 Unchecked, 2.6s Time] [2023-11-24 23:20:07,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-24 23:20:07,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-11-24 23:20:07,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 55 states have (on average 1.2) internal successors, (66), 55 states have internal predecessors, (66), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-24 23:20:07,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 130 transitions. [2023-11-24 23:20:07,868 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 130 transitions. Word has length 85 [2023-11-24 23:20:07,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:07,870 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 130 transitions. [2023-11-24 23:20:07,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-24 23:20:07,870 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 130 transitions. [2023-11-24 23:20:07,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-24 23:20:07,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:07,880 INFO L195 NwaCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:07,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-24 23:20:08,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-24 23:20:08,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:20:08,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:08,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1452001844, now seen corresponding path program 1 times [2023-11-24 23:20:08,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:08,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832867987] [2023-11-24 23:20:08,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:08,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:08,494 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-11-24 23:20:08,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:08,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832867987] [2023-11-24 23:20:08,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832867987] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:20:08,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851920191] [2023-11-24 23:20:08,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:08,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:08,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:08,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:08,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a28989b4-4246-4946-9e1c-a90596c4af03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:20:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:09,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:20:09,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-11-24 23:20:09,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:20:09,138 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-11-24 23:20:09,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851920191] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:20:09,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1779885956] [2023-11-24 23:20:09,143 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2023-11-24 23:20:09,143 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:20:09,144 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:20:09,144 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:20:09,145 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs