./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1924d97c04cfa5367e34b409aac63a4fd986c243eb4aa0af30578d8598fbdf71 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:23:38,840 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:23:38,962 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:23:38,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:23:38,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:23:39,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:23:39,010 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:23:39,010 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:23:39,011 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:23:39,016 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:23:39,017 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:23:39,017 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:23:39,018 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:23:39,020 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:23:39,020 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:23:39,020 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:23:39,021 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:23:39,021 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:23:39,022 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:23:39,022 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:23:39,022 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:23:39,023 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:23:39,024 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:23:39,025 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:23:39,025 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:23:39,025 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:23:39,026 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:23:39,026 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:23:39,026 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:23:39,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:23:39,028 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:23:39,028 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:23:39,029 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:23:39,029 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:23:39,029 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:23:39,029 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:23:39,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:23:39,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:23:39,030 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:23:39,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:23:39,030 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:23:39,031 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:23:39,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:23:39,031 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:23:39,032 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:23:39,032 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:23:39,032 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:23:39,032 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_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1924d97c04cfa5367e34b409aac63a4fd986c243eb4aa0af30578d8598fbdf71 [2023-11-23 21:23:39,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:23:39,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:23:39,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:23:39,371 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:23:39,371 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:23:39,372 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c [2023-11-23 21:23:42,469 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:23:42,729 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:23:42,729 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c [2023-11-23 21:23:42,740 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/data/523f27c02/34413a5dda214e88911d195b4e17acd4/FLAG7ecd1b878 [2023-11-23 21:23:42,756 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/data/523f27c02/34413a5dda214e88911d195b4e17acd4 [2023-11-23 21:23:42,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:23:42,760 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:23:42,761 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:23:42,762 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:23:42,768 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:23:42,770 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:23:42" (1/1) ... [2023-11-23 21:23:42,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@962e6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:42, skipping insertion in model container [2023-11-23 21:23:42,772 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:23:42" (1/1) ... [2023-11-23 21:23:42,828 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:23:43,014 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_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c[642,655] [2023-11-23 21:23:43,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:23:43,110 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:23:43,127 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_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c[642,655] [2023-11-23 21:23:43,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:23:43,185 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:23:43,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:43 WrapperNode [2023-11-23 21:23:43,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:23:43,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:23:43,187 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:23:43,187 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:23:43,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:43" (1/1) ... [2023-11-23 21:23:43,214 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:43" (1/1) ... [2023-11-23 21:23:43,248 INFO L138 Inliner]: procedures = 24, calls = 22, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 204 [2023-11-23 21:23:43,249 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:23:43,249 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:23:43,249 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:23:43,250 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:23:43,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:43" (1/1) ... [2023-11-23 21:23:43,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:43" (1/1) ... [2023-11-23 21:23:43,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:43" (1/1) ... [2023-11-23 21:23:43,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:43" (1/1) ... [2023-11-23 21:23:43,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:43" (1/1) ... [2023-11-23 21:23:43,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:43" (1/1) ... [2023-11-23 21:23:43,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:43" (1/1) ... [2023-11-23 21:23:43,275 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:43" (1/1) ... [2023-11-23 21:23:43,277 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:23:43,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:23:43,278 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:23:43,278 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:23:43,279 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:43" (1/1) ... [2023-11-23 21:23:43,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:23:43,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:43,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:23:43,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:23:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:23:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-23 21:23:43,369 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-23 21:23:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:23:43,370 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-23 21:23:43,371 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-23 21:23:43,371 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-11-23 21:23:43,372 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-11-23 21:23:43,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:23:43,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:23:43,483 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:23:43,485 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:23:43,832 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:23:43,923 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:23:43,924 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 21:23:43,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:23:43 BoogieIcfgContainer [2023-11-23 21:23:43,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:23:43,932 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:23:43,932 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:23:43,935 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:23:43,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:23:42" (1/3) ... [2023-11-23 21:23:43,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40be9b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:23:43, skipping insertion in model container [2023-11-23 21:23:43,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:43" (2/3) ... [2023-11-23 21:23:43,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40be9b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:23:43, skipping insertion in model container [2023-11-23 21:23:43,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:23:43" (3/3) ... [2023-11-23 21:23:43,938 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2.c [2023-11-23 21:23:43,957 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:23:43,958 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:23:44,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:23:44,022 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;@4c81a60e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:23:44,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:23:44,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 40 states have (on average 1.575) internal successors, (63), 43 states have internal predecessors, (63), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 21:23:44,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 21:23:44,044 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:44,044 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 21:23:44,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:23:44,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:44,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1434199698, now seen corresponding path program 1 times [2023-11-23 21:23:44,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:44,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423001590] [2023-11-23 21:23:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:44,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:44,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:23:44,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:44,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423001590] [2023-11-23 21:23:44,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423001590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:44,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:44,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:44,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928051121] [2023-11-23 21:23:44,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:44,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:23:44,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:44,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:23:44,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:44,401 INFO L87 Difference]: Start difference. First operand has 51 states, 40 states have (on average 1.575) internal successors, (63), 43 states have internal predecessors, (63), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:44,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:44,480 INFO L93 Difference]: Finished difference Result 140 states and 208 transitions. [2023-11-23 21:23:44,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:23:44,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2023-11-23 21:23:44,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:44,491 INFO L225 Difference]: With dead ends: 140 [2023-11-23 21:23:44,492 INFO L226 Difference]: Without dead ends: 86 [2023-11-23 21:23:44,495 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 [2023-11-23 21:23:44,499 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 47 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:44,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 125 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:23:44,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-23 21:23:44,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2023-11-23 21:23:44,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 69 states have internal predecessors, (97), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 21:23:44,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 113 transitions. [2023-11-23 21:23:44,545 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 113 transitions. Word has length 27 [2023-11-23 21:23:44,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:44,546 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 113 transitions. [2023-11-23 21:23:44,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:44,546 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 113 transitions. [2023-11-23 21:23:44,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 21:23:44,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:44,550 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 21:23:44,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:23:44,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:23:44,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:44,551 INFO L85 PathProgramCache]: Analyzing trace with hash -746349758, now seen corresponding path program 1 times [2023-11-23 21:23:44,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:44,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854066092] [2023-11-23 21:23:44,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:44,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:44,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:23:44,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:44,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854066092] [2023-11-23 21:23:44,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854066092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:44,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:44,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:44,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182397770] [2023-11-23 21:23:44,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:44,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:23:44,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:44,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:23:44,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:44,654 INFO L87 Difference]: Start difference. First operand 82 states and 113 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:44,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:44,707 INFO L93 Difference]: Finished difference Result 238 states and 330 transitions. [2023-11-23 21:23:44,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:23:44,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2023-11-23 21:23:44,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:44,711 INFO L225 Difference]: With dead ends: 238 [2023-11-23 21:23:44,711 INFO L226 Difference]: Without dead ends: 157 [2023-11-23 21:23:44,712 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 [2023-11-23 21:23:44,714 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 48 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:44,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 110 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:23:44,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-23 21:23:44,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2023-11-23 21:23:44,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 128 states have (on average 1.390625) internal successors, (178), 129 states have internal predecessors, (178), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 21:23:44,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 208 transitions. [2023-11-23 21:23:44,767 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 208 transitions. Word has length 28 [2023-11-23 21:23:44,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:44,767 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 208 transitions. [2023-11-23 21:23:44,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:44,768 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 208 transitions. [2023-11-23 21:23:44,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:23:44,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:44,770 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 21:23:44,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:23:44,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:23:44,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:44,771 INFO L85 PathProgramCache]: Analyzing trace with hash 759913133, now seen corresponding path program 1 times [2023-11-23 21:23:44,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:44,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540647735] [2023-11-23 21:23:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:44,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:23:44,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:44,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540647735] [2023-11-23 21:23:44,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540647735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:44,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:44,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:44,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855007087] [2023-11-23 21:23:44,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:44,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:23:44,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:44,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:23:44,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:44,835 INFO L87 Difference]: Start difference. First operand 153 states and 208 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:44,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:44,896 INFO L93 Difference]: Finished difference Result 393 states and 536 transitions. [2023-11-23 21:23:44,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:23:44,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2023-11-23 21:23:44,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:44,899 INFO L225 Difference]: With dead ends: 393 [2023-11-23 21:23:44,899 INFO L226 Difference]: Without dead ends: 241 [2023-11-23 21:23:44,901 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 [2023-11-23 21:23:44,902 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 46 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:44,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 111 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:23:44,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-11-23 21:23:44,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 227. [2023-11-23 21:23:44,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 191 states have (on average 1.3769633507853403) internal successors, (263), 194 states have internal predecessors, (263), 22 states have call successors, (22), 14 states have call predecessors, (22), 13 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-23 21:23:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 305 transitions. [2023-11-23 21:23:44,933 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 305 transitions. Word has length 29 [2023-11-23 21:23:44,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:44,934 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 305 transitions. [2023-11-23 21:23:44,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:44,934 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 305 transitions. [2023-11-23 21:23:44,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-23 21:23:44,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:44,937 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:44,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:23:44,938 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:23:44,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:44,938 INFO L85 PathProgramCache]: Analyzing trace with hash -629480206, now seen corresponding path program 1 times [2023-11-23 21:23:44,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:44,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561806562] [2023-11-23 21:23:44,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:44,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:45,077 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:45,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:45,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561806562] [2023-11-23 21:23:45,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561806562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:45,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:45,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:45,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605418489] [2023-11-23 21:23:45,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:45,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:23:45,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:45,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:23:45,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:45,080 INFO L87 Difference]: Start difference. First operand 227 states and 305 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:23:45,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:45,148 INFO L93 Difference]: Finished difference Result 390 states and 523 transitions. [2023-11-23 21:23:45,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:23:45,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2023-11-23 21:23:45,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:45,152 INFO L225 Difference]: With dead ends: 390 [2023-11-23 21:23:45,152 INFO L226 Difference]: Without dead ends: 232 [2023-11-23 21:23:45,153 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 [2023-11-23 21:23:45,155 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 32 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:45,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 145 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:23:45,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-23 21:23:45,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 221. [2023-11-23 21:23:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 185 states have (on average 1.345945945945946) internal successors, (249), 188 states have internal predecessors, (249), 22 states have call successors, (22), 14 states have call predecessors, (22), 13 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-23 21:23:45,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 291 transitions. [2023-11-23 21:23:45,180 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 291 transitions. Word has length 42 [2023-11-23 21:23:45,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:45,181 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 291 transitions. [2023-11-23 21:23:45,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:23:45,181 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 291 transitions. [2023-11-23 21:23:45,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-23 21:23:45,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:45,184 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 21:23:45,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:23:45,184 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:23:45,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:45,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1387179124, now seen corresponding path program 1 times [2023-11-23 21:23:45,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:45,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405431148] [2023-11-23 21:23:45,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:45,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:45,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:23:45,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:45,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405431148] [2023-11-23 21:23:45,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405431148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:45,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:45,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:45,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294533451] [2023-11-23 21:23:45,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:45,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:23:45,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:45,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:23:45,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:45,239 INFO L87 Difference]: Start difference. First operand 221 states and 291 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:23:45,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:45,291 INFO L93 Difference]: Finished difference Result 470 states and 615 transitions. [2023-11-23 21:23:45,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:23:45,292 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2023-11-23 21:23:45,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:45,294 INFO L225 Difference]: With dead ends: 470 [2023-11-23 21:23:45,294 INFO L226 Difference]: Without dead ends: 267 [2023-11-23 21:23:45,295 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 [2023-11-23 21:23:45,297 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 34 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:45,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 109 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:23:45,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-11-23 21:23:45,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2023-11-23 21:23:45,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 224 states have (on average 1.3035714285714286) internal successors, (292), 227 states have internal predecessors, (292), 26 states have call successors, (26), 17 states have call predecessors, (26), 16 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-23 21:23:45,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 342 transitions. [2023-11-23 21:23:45,325 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 342 transitions. Word has length 45 [2023-11-23 21:23:45,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:45,326 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 342 transitions. [2023-11-23 21:23:45,326 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:23:45,326 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 342 transitions. [2023-11-23 21:23:45,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-23 21:23:45,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:45,329 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2023-11-23 21:23:45,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:23:45,330 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:23:45,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:45,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1511264902, now seen corresponding path program 1 times [2023-11-23 21:23:45,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:45,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539645958] [2023-11-23 21:23:45,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:45,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 21:23:45,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:45,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539645958] [2023-11-23 21:23:45,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539645958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:45,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:45,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:23:45,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929472764] [2023-11-23 21:23:45,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:45,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:45,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:45,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:45,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:45,452 INFO L87 Difference]: Start difference. First operand 267 states and 342 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:23:45,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:45,541 INFO L93 Difference]: Finished difference Result 307 states and 389 transitions. [2023-11-23 21:23:45,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:23:45,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 46 [2023-11-23 21:23:45,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:45,545 INFO L225 Difference]: With dead ends: 307 [2023-11-23 21:23:45,545 INFO L226 Difference]: Without dead ends: 304 [2023-11-23 21:23:45,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:45,547 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 114 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:45,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 108 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:23:45,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-23 21:23:45,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 266. [2023-11-23 21:23:45,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 224 states have (on average 1.2946428571428572) internal successors, (290), 226 states have internal predecessors, (290), 25 states have call successors, (25), 17 states have call predecessors, (25), 16 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-23 21:23:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 339 transitions. [2023-11-23 21:23:45,578 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 339 transitions. Word has length 46 [2023-11-23 21:23:45,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:45,579 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 339 transitions. [2023-11-23 21:23:45,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:23:45,579 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 339 transitions. [2023-11-23 21:23:45,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-23 21:23:45,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:45,582 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2023-11-23 21:23:45,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:23:45,583 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:23:45,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:45,583 INFO L85 PathProgramCache]: Analyzing trace with hash -395751625, now seen corresponding path program 1 times [2023-11-23 21:23:45,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:45,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970690022] [2023-11-23 21:23:45,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:45,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:45,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 21:23:45,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:45,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970690022] [2023-11-23 21:23:45,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970690022] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:23:45,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349330984] [2023-11-23 21:23:45,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:45,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:45,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:45,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:45,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:23:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:45,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:23:45,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:23:46,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:23:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 21:23:46,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349330984] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:23:46,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1679150446] [2023-11-23 21:23:46,306 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-11-23 21:23:46,306 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:23:46,311 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:23:46,317 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:23:46,317 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:23:48,538 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 62 for LOIs [2023-11-23 21:23:48,556 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify_threads with input of size 116 for LOIs [2023-11-23 21:23:49,838 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:23:57,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1679150446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:57,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:23:57,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [5, 4, 4] total 31 [2023-11-23 21:23:57,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860843528] [2023-11-23 21:23:57,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:57,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-23 21:23:57,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:57,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-23 21:23:57,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:23:57,557 INFO L87 Difference]: Start difference. First operand 266 states and 339 transitions. Second operand has 26 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:24:00,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:24:00,534 INFO L93 Difference]: Finished difference Result 572 states and 729 transitions. [2023-11-23 21:24:00,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-23 21:24:00,535 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2023-11-23 21:24:00,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:24:00,537 INFO L225 Difference]: With dead ends: 572 [2023-11-23 21:24:00,538 INFO L226 Difference]: Without dead ends: 307 [2023-11-23 21:24:00,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=165, Invalid=1167, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 21:24:00,541 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 25 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:24:00,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 388 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 21:24:00,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-23 21:24:00,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 294. [2023-11-23 21:24:00,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 249 states have (on average 1.2690763052208835) internal successors, (316), 251 states have internal predecessors, (316), 26 states have call successors, (26), 19 states have call predecessors, (26), 18 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 21:24:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 367 transitions. [2023-11-23 21:24:00,573 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 367 transitions. Word has length 47 [2023-11-23 21:24:00,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:24:00,573 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 367 transitions. [2023-11-23 21:24:00,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:24:00,574 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 367 transitions. [2023-11-23 21:24:00,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 21:24:00,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:00,576 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 21:24:00,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 21:24:00,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:24:00,794 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:00,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:00,795 INFO L85 PathProgramCache]: Analyzing trace with hash 402930623, now seen corresponding path program 1 times [2023-11-23 21:24:00,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:00,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221290006] [2023-11-23 21:24:00,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:00,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:00,960 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:24:00,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:00,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221290006] [2023-11-23 21:24:00,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221290006] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:24:00,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23245946] [2023-11-23 21:24:00,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:00,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:24:00,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:24:00,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:24:00,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:24:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:01,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:24:01,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:24:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:24:01,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:24:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 21:24:01,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23245946] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:24:01,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1881873726] [2023-11-23 21:24:01,332 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-11-23 21:24:01,333 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:24:01,334 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:24:01,334 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:24:01,334 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:24:03,574 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 44 for LOIs [2023-11-23 21:24:03,593 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify_threads with input of size 116 for LOIs [2023-11-23 21:24:04,512 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:24:12,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1881873726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:24:12,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:24:12,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [5, 4, 4] total 36 [2023-11-23 21:24:12,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885838238] [2023-11-23 21:24:12,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:24:12,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-23 21:24:12,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:24:12,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-23 21:24:12,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2023-11-23 21:24:12,680 INFO L87 Difference]: Start difference. First operand 294 states and 367 transitions. Second operand has 28 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:24:16,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:24:16,666 INFO L93 Difference]: Finished difference Result 544 states and 690 transitions. [2023-11-23 21:24:16,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-23 21:24:16,666 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2023-11-23 21:24:16,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:24:16,669 INFO L225 Difference]: With dead ends: 544 [2023-11-23 21:24:16,669 INFO L226 Difference]: Without dead ends: 316 [2023-11-23 21:24:16,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 133 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=276, Invalid=1980, Unknown=0, NotChecked=0, Total=2256 [2023-11-23 21:24:16,672 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 44 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:24:16,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 441 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 21:24:16,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-23 21:24:16,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 249. [2023-11-23 21:24:16,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 211 states have (on average 1.2654028436018958) internal successors, (267), 213 states have internal predecessors, (267), 22 states have call successors, (22), 16 states have call predecessors, (22), 15 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-23 21:24:16,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 310 transitions. [2023-11-23 21:24:16,704 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 310 transitions. Word has length 55 [2023-11-23 21:24:16,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:24:16,705 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 310 transitions. [2023-11-23 21:24:16,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:24:16,705 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 310 transitions. [2023-11-23 21:24:16,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 21:24:16,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:16,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 21:24:16,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:24:16,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-23 21:24:16,923 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:16,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:16,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2014630829, now seen corresponding path program 1 times [2023-11-23 21:24:16,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:16,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626198062] [2023-11-23 21:24:16,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:16,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:17,085 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:24:17,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:17,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626198062] [2023-11-23 21:24:17,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626198062] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:24:17,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346389159] [2023-11-23 21:24:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:17,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:24:17,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:24:17,087 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:24:17,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:24:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:17,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:24:17,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:24:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:24:17,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:24:17,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346389159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:24:17,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:24:17,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-23 21:24:17,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450184881] [2023-11-23 21:24:17,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:24:17,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:24:17,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:24:17,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:24:17,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:24:17,192 INFO L87 Difference]: Start difference. First operand 249 states and 310 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-23 21:24:17,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:24:17,249 INFO L93 Difference]: Finished difference Result 425 states and 525 transitions. [2023-11-23 21:24:17,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:24:17,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 56 [2023-11-23 21:24:17,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:24:17,251 INFO L225 Difference]: With dead ends: 425 [2023-11-23 21:24:17,251 INFO L226 Difference]: Without dead ends: 181 [2023-11-23 21:24:17,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:24:17,255 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 27 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:24:17,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 124 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:24:17,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-23 21:24:17,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-11-23 21:24:17,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 153 states have (on average 1.2026143790849673) internal successors, (184), 154 states have internal predecessors, (184), 16 states have call successors, (16), 12 states have call predecessors, (16), 11 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 21:24:17,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 215 transitions. [2023-11-23 21:24:17,284 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 215 transitions. Word has length 56 [2023-11-23 21:24:17,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:24:17,284 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 215 transitions. [2023-11-23 21:24:17,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-23 21:24:17,285 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 215 transitions. [2023-11-23 21:24:17,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 21:24:17,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:17,286 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 21:24:17,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:24:17,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-23 21:24:17,502 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:17,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:17,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1678912636, now seen corresponding path program 1 times [2023-11-23 21:24:17,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:17,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698139257] [2023-11-23 21:24:17,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:17,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:17,565 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:24:17,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:17,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698139257] [2023-11-23 21:24:17,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698139257] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:24:17,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504474727] [2023-11-23 21:24:17,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:17,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:24:17,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:24:17,567 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:24:17,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:24:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:17,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:24:17,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:24:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:24:17,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:24:17,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504474727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:24:17,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:24:17,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-11-23 21:24:17,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406669121] [2023-11-23 21:24:17,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:24:17,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:24:17,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:24:17,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:24:17,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:24:17,685 INFO L87 Difference]: Start difference. First operand 181 states and 215 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-23 21:24:17,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:24:17,733 INFO L93 Difference]: Finished difference Result 283 states and 346 transitions. [2023-11-23 21:24:17,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:24:17,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 60 [2023-11-23 21:24:17,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:24:17,735 INFO L225 Difference]: With dead ends: 283 [2023-11-23 21:24:17,735 INFO L226 Difference]: Without dead ends: 168 [2023-11-23 21:24:17,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:24:17,737 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 40 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:24:17,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 122 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:24:17,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-23 21:24:17,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2023-11-23 21:24:17,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 140 states have (on average 1.1714285714285715) internal successors, (164), 140 states have internal predecessors, (164), 15 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 21:24:17,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 193 transitions. [2023-11-23 21:24:17,758 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 193 transitions. Word has length 60 [2023-11-23 21:24:17,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:24:17,759 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 193 transitions. [2023-11-23 21:24:17,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-23 21:24:17,759 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 193 transitions. [2023-11-23 21:24:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 21:24:17,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:17,760 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 21:24:17,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-23 21:24:17,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:24:17,977 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:17,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:17,977 INFO L85 PathProgramCache]: Analyzing trace with hash -2106043070, now seen corresponding path program 1 times [2023-11-23 21:24:17,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:17,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142695654] [2023-11-23 21:24:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:17,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 21:24:18,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:18,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142695654] [2023-11-23 21:24:18,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142695654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:24:18,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:24:18,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:24:18,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75147626] [2023-11-23 21:24:18,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:24:18,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:24:18,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:24:18,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:24:18,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:24:18,036 INFO L87 Difference]: Start difference. First operand 166 states and 193 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:24:18,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:24:18,095 INFO L93 Difference]: Finished difference Result 264 states and 315 transitions. [2023-11-23 21:24:18,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:24:18,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-11-23 21:24:18,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:24:18,098 INFO L225 Difference]: With dead ends: 264 [2023-11-23 21:24:18,098 INFO L226 Difference]: Without dead ends: 164 [2023-11-23 21:24:18,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:24:18,099 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 61 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:24:18,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 115 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:24:18,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-23 21:24:18,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-11-23 21:24:18,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 138 states have (on average 1.1521739130434783) internal successors, (159), 138 states have internal predecessors, (159), 15 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 21:24:18,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 188 transitions. [2023-11-23 21:24:18,123 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 188 transitions. Word has length 60 [2023-11-23 21:24:18,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:24:18,125 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 188 transitions. [2023-11-23 21:24:18,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:24:18,125 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 188 transitions. [2023-11-23 21:24:18,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-23 21:24:18,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:18,126 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 21:24:18,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:24:18,127 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:18,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:18,127 INFO L85 PathProgramCache]: Analyzing trace with hash 525448093, now seen corresponding path program 1 times [2023-11-23 21:24:18,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:18,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204014143] [2023-11-23 21:24:18,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:18,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 21:24:18,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:18,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204014143] [2023-11-23 21:24:18,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204014143] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:24:18,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685780512] [2023-11-23 21:24:18,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:18,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:24:18,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:24:18,284 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:24:18,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:24:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:18,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:24:18,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:24:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:24:18,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:24:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 21:24:18,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685780512] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:24:18,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1273795177] [2023-11-23 21:24:18,655 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-11-23 21:24:18,655 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:24:18,656 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:24:18,656 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:24:18,656 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:24:21,570 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 19 for LOIs [2023-11-23 21:24:21,572 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 86 for LOIs [2023-11-23 21:24:21,634 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify_threads with input of size 10 for LOIs [2023-11-23 21:24:21,717 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:24:24,653 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9493#(and (<= 0 ~p_dw_pc~0) (= ~q_free~0 1) (= ~c_dr_pc~0 1) (not (= ~c_num_read~0 ~p_num_write~0)) (= ~q_read_ev~0 2) (= ~c_last_read~0 ~p_last_write~0))' at error location [2023-11-23 21:24:24,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:24:24,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:24:24,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2023-11-23 21:24:24,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701620626] [2023-11-23 21:24:24,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:24:24,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:24:24,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:24:24,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:24:24,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1649, Unknown=0, NotChecked=0, Total=1806 [2023-11-23 21:24:24,656 INFO L87 Difference]: Start difference. First operand 164 states and 188 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 6 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-23 21:24:24,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:24:24,809 INFO L93 Difference]: Finished difference Result 347 states and 398 transitions. [2023-11-23 21:24:24,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:24:24,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 6 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 61 [2023-11-23 21:24:24,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:24:24,812 INFO L225 Difference]: With dead ends: 347 [2023-11-23 21:24:24,812 INFO L226 Difference]: Without dead ends: 344 [2023-11-23 21:24:24,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=157, Invalid=1649, Unknown=0, NotChecked=0, Total=1806 [2023-11-23 21:24:24,814 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 133 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:24:24,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 371 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:24:24,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-11-23 21:24:24,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 220. [2023-11-23 21:24:24,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 185 states have (on average 1.162162162162162) internal successors, (215), 186 states have internal predecessors, (215), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 21:24:24,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 254 transitions. [2023-11-23 21:24:24,844 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 254 transitions. Word has length 61 [2023-11-23 21:24:24,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:24:24,845 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 254 transitions. [2023-11-23 21:24:24,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 6 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-23 21:24:24,845 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 254 transitions. [2023-11-23 21:24:24,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-23 21:24:24,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:24:24,847 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-23 21:24:24,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:24:25,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 21:24:25,068 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:24:25,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:24:25,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1811601580, now seen corresponding path program 2 times [2023-11-23 21:24:25,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:24:25,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914686683] [2023-11-23 21:24:25,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:24:25,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:24:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:24:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 21:24:25,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:24:25,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914686683] [2023-11-23 21:24:25,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914686683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:24:25,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:24:25,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:24:25,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053882892] [2023-11-23 21:24:25,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:24:25,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:24:25,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:24:25,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:24:25,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:24:25,116 INFO L87 Difference]: Start difference. First operand 220 states and 254 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-23 21:24:25,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:24:25,159 INFO L93 Difference]: Finished difference Result 344 states and 397 transitions. [2023-11-23 21:24:25,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:24:25,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 74 [2023-11-23 21:24:25,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:24:25,160 INFO L225 Difference]: With dead ends: 344 [2023-11-23 21:24:25,160 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:24:25,161 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 [2023-11-23 21:24:25,161 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 38 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:24:25,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 112 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:24:25,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:24:25,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:24:25,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:24:25,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:24:25,163 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2023-11-23 21:24:25,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:24:25,163 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:24:25,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-23 21:24:25,164 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:24:25,164 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:24:25,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:24:25,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 21:24:25,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 21:24:29,468 INFO L899 garLoopResultBuilder]: For program point L62(lines 62 67) no Hoare annotation was computed. [2023-11-23 21:24:29,469 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 51) no Hoare annotation was computed. [2023-11-23 21:24:29,469 INFO L899 garLoopResultBuilder]: For program point immediate_notify_threadsEXIT(lines 76 100) no Hoare annotation was computed. [2023-11-23 21:24:29,470 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 76 100) the Hoare annotation is: (let ((.cse20 (select |#memory_int| 1))) (let ((.cse8 (not (= ~p_last_write~0 ~q_buf_0~0))) (.cse0 (not (= ~a_t~0 0))) (.cse1 (< (+ ~p_last_write~0 2147483648) 0)) (.cse2 (not (= (select .cse20 0) 48))) (.cse3 (not (= ~p_num_write~0 1))) (.cse4 (not (= 2 (select |#length| 1)))) (.cse5 (not (= ~c_dr_pc~0 0))) (.cse6 (not (= (select |#valid| 3) 1))) (.cse7 (not (= (select |#length| 3) 12))) (.cse9 (not (= (select |#valid| 0) 0))) (.cse10 (not (= (select .cse20 1) 0))) (.cse11 (not (= (select |#valid| 1) 1))) (.cse12 (not (= 19 (select |#length| 2)))) (.cse17 (not (= ~q_write_ev~0 2))) (.cse13 (< |#StackHeapBarrier| 1)) (.cse14 (not (= ~p_dw_i~0 1))) (.cse15 (not (= (select |#valid| 2) 1))) (.cse18 (not (= ~q_free~0 1))) (.cse19 (not (= ~c_last_read~0 ~p_last_write~0))) (.cse16 (not (= 1 ~c_dr_i~0)))) (and (or .cse0 .cse1 (not (= |old(~c_dr_st~0)| 0)) .cse2 .cse3 .cse4 .cse5 .cse6 (not (= ~p_dw_pc~0 0)) .cse7 .cse8 .cse9 .cse10 (not (= ~c_num_read~0 0)) (not (= ~q_free~0 0)) .cse11 .cse12 (and (= ~c_dr_st~0 0) (= ~p_dw_st~0 1)) (not (= |old(~p_dw_st~0)| 1)) (not (= ~q_write_ev~0 1)) .cse13 .cse14 .cse15 (not (= ~c_last_read~0 0)) (< 2147483647 ~p_last_write~0) (not (= ~q_read_ev~0 2)) .cse16) (or .cse8 (not (= ~c_num_read~0 ~p_num_write~0)) (not (= ~c_dr_pc~0 1)) .cse17 .cse18 (<= 2 ~p_dw_st~0) .cse19 (< |old(~p_dw_st~0)| 2)) (or .cse0 .cse1 (not (= ~q_read_ev~0 1)) .cse2 .cse3 .cse4 .cse5 (not (= |old(~c_dr_st~0)| 1)) .cse6 .cse7 .cse9 (not (= |old(~p_dw_st~0)| 2)) .cse10 (not (= ~p_dw_pc~0 1)) .cse11 .cse12 (< 2147483647 ~q_buf_0~0) (not (= ~c_num_read~0 1)) (not (= ~c_last_read~0 ~q_buf_0~0)) .cse17 .cse13 .cse14 .cse15 .cse18 .cse19 (and (= 2 ~p_dw_st~0) (= ~c_dr_st~0 1)) .cse16)))) [2023-11-23 21:24:29,470 INFO L899 garLoopResultBuilder]: For program point L42-2(lines 42 51) no Hoare annotation was computed. [2023-11-23 21:24:29,470 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 70) no Hoare annotation was computed. [2023-11-23 21:24:29,470 INFO L899 garLoopResultBuilder]: For program point L61-2(lines 61 70) no Hoare annotation was computed. [2023-11-23 21:24:29,470 INFO L899 garLoopResultBuilder]: For program point L53(lines 41 55) no Hoare annotation was computed. [2023-11-23 21:24:29,470 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 48) no Hoare annotation was computed. [2023-11-23 21:24:29,471 INFO L899 garLoopResultBuilder]: For program point L72(lines 60 74) no Hoare annotation was computed. [2023-11-23 21:24:29,471 INFO L899 garLoopResultBuilder]: For program point exists_runnable_threadEXIT(lines 220 239) no Hoare annotation was computed. [2023-11-23 21:24:29,471 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 220 239) the Hoare annotation is: true [2023-11-23 21:24:29,471 INFO L895 garLoopResultBuilder]: At program point L192(line 192) the Hoare annotation is: false [2023-11-23 21:24:29,472 INFO L895 garLoopResultBuilder]: At program point L192-1(lines 160 195) the Hoare annotation is: (let ((.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse1 (= ~q_write_ev~0 2))) (or (and (= ~c_num_read~0 ~p_num_write~0) .cse0 (= ~q_free~0 1) .cse1 (= ~c_last_read~0 ~p_last_write~0)) (let ((.cse2 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= ~c_num_read~0 0) (<= ~q_buf_0~0 2147483647) (not (= |ULTIMATE.start_eval_~tmp___0~1#1| 0)) .cse0 (<= |ULTIMATE.start_eval_~tmp~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_eval_~tmp___0~1#1| 2147483648)) (= ~c_last_read~0 0) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (= ~q_free~0 0) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= |ULTIMATE.start_eval_~tmp___0~1#1| 2147483647) (<= 0 (+ ~p_last_write~0 2147483648)) (= ~p_dw_pc~0 1) .cse1 (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) (= ~q_read_ev~0 2) (<= 0 (+ |ULTIMATE.start_eval_~tmp~1#1| 2147483648)) (= ~c_dr_pc~0 0) (not (= |ULTIMATE.start_eval_~tmp~1#1| 0)) (= 2 ~p_dw_st~0) (= ~p_dw_i~0 1) (= (select |#valid| 0) 0) (= ~p_num_write~0 1) (= (select |#valid| 2) 1) (= ~a_t~0 0) (= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (= (select .cse2 0) 48) (= (select .cse2 1) 0) (= ~c_dr_st~0 1))))) [2023-11-23 21:24:29,472 INFO L899 garLoopResultBuilder]: For program point L250(line 250) no Hoare annotation was computed. [2023-11-23 21:24:29,472 INFO L899 garLoopResultBuilder]: For program point L118(lines 117 137) no Hoare annotation was computed. [2023-11-23 21:24:29,472 INFO L895 garLoopResultBuilder]: At program point L300(line 300) the Hoare annotation is: (let ((.cse0 (= ~c_dr_st~0 2)) (.cse2 (= ~q_free~0 1)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse3 (= ~c_dr_pc~0 1)) (.cse4 (= ~q_write_ev~0 2)) (.cse5 (<= 2 ~p_dw_st~0))) (or (and (= ~c_num_read~0 ~p_num_write~0) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse5) (and (<= 1 |#StackHeapBarrier|) (<= 0 ~q_free~0) (= ~c_num_read~0 0) (<= ~p_dw_pc~0 1) .cse1 (<= 0 ~p_dw_pc~0) (= ~c_last_read~0 0) (<= 0 ~p_num_write~0) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= ~p_num_write~0 1) (<= 0 (+ ~q_buf_0~0 2147483648)) .cse4 (<= ~q_free~0 1) (= ~q_read_ev~0 2) (= ~c_dr_pc~0 0) (= 2 ~p_dw_st~0) (= ~p_dw_i~0 1) (<= ~p_last_write~0 2147483647) (= ~a_t~0 0)) (and .cse1 (= (+ ~c_num_read~0 1) ~p_num_write~0) (= ~q_free~0 0) .cse3 .cse4 .cse5))) [2023-11-23 21:24:29,472 INFO L899 garLoopResultBuilder]: For program point L300-1(line 300) no Hoare annotation was computed. [2023-11-23 21:24:29,472 INFO L899 garLoopResultBuilder]: For program point do_write_p_returnLabel#1(lines 101 143) no Hoare annotation was computed. [2023-11-23 21:24:29,473 INFO L899 garLoopResultBuilder]: For program point L152(lines 152 156) no Hoare annotation was computed. [2023-11-23 21:24:29,473 INFO L899 garLoopResultBuilder]: For program point L119(lines 119 127) no Hoare annotation was computed. [2023-11-23 21:24:29,473 INFO L899 garLoopResultBuilder]: For program point start_simulation_returnLabel#1(lines 313 341) no Hoare annotation was computed. [2023-11-23 21:24:29,473 INFO L899 garLoopResultBuilder]: For program point L276(lines 276 283) no Hoare annotation was computed. [2023-11-23 21:24:29,473 INFO L899 garLoopResultBuilder]: For program point L161(lines 160 195) no Hoare annotation was computed. [2023-11-23 21:24:29,473 INFO L899 garLoopResultBuilder]: For program point do_read_c_returnLabel#1(lines 145 201) no Hoare annotation was computed. [2023-11-23 21:24:29,473 INFO L899 garLoopResultBuilder]: For program point L252(lines 252 256) no Hoare annotation was computed. [2023-11-23 21:24:29,473 INFO L899 garLoopResultBuilder]: For program point L252-1(lines 247 287) no Hoare annotation was computed. [2023-11-23 21:24:29,473 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 21:24:29,474 INFO L899 garLoopResultBuilder]: For program point L261(lines 261 268) no Hoare annotation was computed. [2023-11-23 21:24:29,474 INFO L899 garLoopResultBuilder]: For program point L162-1(lines 162 172) no Hoare annotation was computed. [2023-11-23 21:24:29,474 INFO L895 garLoopResultBuilder]: At program point L187(line 187) the Hoare annotation is: false [2023-11-23 21:24:29,474 INFO L895 garLoopResultBuilder]: At program point L179(line 179) the Hoare annotation is: (let ((.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse1 (= ~q_free~0 1)) (.cse2 (= ~q_write_ev~0 2)) (.cse3 (= ~c_last_read~0 ~p_last_write~0))) (or (let ((.cse4 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= ~q_buf_0~0 2147483647) (not (= |ULTIMATE.start_eval_~tmp___0~1#1| 0)) .cse0 (<= |ULTIMATE.start_eval_~tmp~1#1| 2147483647) (= |ULTIMATE.start_do_read_c_~a~0#1| ~q_buf_0~0) (<= 0 (+ |ULTIMATE.start_eval_~tmp___0~1#1| 2147483648)) .cse1 (= ~q_read_ev~0 1) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= ~c_num_read~0 1) (<= |ULTIMATE.start_eval_~tmp___0~1#1| 2147483647) (<= 0 (+ ~q_buf_0~0 2147483648)) (= ~p_dw_pc~0 1) .cse2 (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) (<= 0 (+ |ULTIMATE.start_eval_~tmp~1#1| 2147483648)) (= ~c_dr_pc~0 0) (not (= |ULTIMATE.start_eval_~tmp~1#1| 0)) (= 2 ~p_dw_st~0) (= ~p_dw_i~0 1) (= (select |#valid| 0) 0) (= ~p_num_write~0 1) (= (select |#valid| 2) 1) .cse3 (= ~a_t~0 0) (= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (= (select .cse4 0) 48) (= (select .cse4 1) 0) (= ~c_dr_st~0 1))) (and (= ~c_num_read~0 ~p_num_write~0) .cse0 .cse1 (= ~c_dr_pc~0 1) .cse2 .cse3 (<= 2 ~p_dw_st~0)))) [2023-11-23 21:24:29,474 INFO L899 garLoopResultBuilder]: For program point L179-1(line 179) no Hoare annotation was computed. [2023-11-23 21:24:29,475 INFO L899 garLoopResultBuilder]: For program point eval_returnLabel#1(lines 240 293) no Hoare annotation was computed. [2023-11-23 21:24:29,475 INFO L899 garLoopResultBuilder]: For program point L106(lines 106 114) no Hoare annotation was computed. [2023-11-23 21:24:29,475 INFO L895 garLoopResultBuilder]: At program point L272(lines 247 287) the Hoare annotation is: (let ((.cse0 (= ~c_dr_st~0 2)) (.cse2 (= ~q_free~0 1)) (.cse6 (<= 1 |#StackHeapBarrier|)) (.cse7 (= ~c_num_read~0 0)) (.cse8 (= ~c_last_read~0 0)) (.cse9 (= 1 ~c_dr_i~0)) (.cse10 (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1)) (.cse11 (= ~q_read_ev~0 2)) (.cse12 (= ~c_dr_pc~0 0)) (.cse13 (= ~p_dw_i~0 1)) (.cse14 (= ~a_t~0 0)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse3 (= ~c_dr_pc~0 1)) (.cse4 (= ~q_write_ev~0 2)) (.cse5 (<= 2 ~p_dw_st~0))) (or (and (= ~c_num_read~0 ~p_num_write~0) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse5) (let ((.cse15 (select |#memory_int| 1))) (and (= ~p_dw_pc~0 0) (= ~c_dr_st~0 0) (= ~p_num_write~0 0) (= (select |#length| 3) 12) .cse6 .cse7 (= ~q_buf_0~0 0) (= ~p_last_write~0 0) .cse2 .cse8 .cse9 .cse10 (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) .cse4 (= ~p_dw_st~0 0) (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) .cse11 .cse12 .cse13 (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) .cse14 (= (select .cse15 0) 48) (= (select .cse15 1) 0))) (and .cse6 (<= 0 ~q_free~0) .cse7 (<= ~p_dw_pc~0 1) .cse1 (<= 0 ~p_dw_pc~0) .cse8 (<= 0 ~p_num_write~0) .cse9 .cse10 (<= ~p_num_write~0 1) (<= 0 (+ ~q_buf_0~0 2147483648)) .cse4 (<= ~q_free~0 1) .cse11 .cse12 (= 2 ~p_dw_st~0) .cse13 (<= ~p_last_write~0 2147483647) .cse14) (and .cse1 (= (+ ~c_num_read~0 1) ~p_num_write~0) (= ~q_free~0 0) .cse3 .cse4 .cse5))) [2023-11-23 21:24:29,475 INFO L899 garLoopResultBuilder]: For program point L330(lines 330 334) no Hoare annotation was computed. [2023-11-23 21:24:29,475 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 21:24:29,476 INFO L895 garLoopResultBuilder]: At program point L248(line 248) the Hoare annotation is: (let ((.cse0 (= ~c_dr_st~0 2)) (.cse2 (= ~q_free~0 1)) (.cse6 (<= 1 |#StackHeapBarrier|)) (.cse7 (= ~c_num_read~0 0)) (.cse8 (= ~c_last_read~0 0)) (.cse9 (= 1 ~c_dr_i~0)) (.cse10 (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1)) (.cse11 (= ~q_read_ev~0 2)) (.cse12 (= ~c_dr_pc~0 0)) (.cse13 (= ~p_dw_i~0 1)) (.cse14 (= ~a_t~0 0)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse3 (= ~c_dr_pc~0 1)) (.cse4 (= ~q_write_ev~0 2)) (.cse5 (<= 2 ~p_dw_st~0))) (or (and (= ~c_num_read~0 ~p_num_write~0) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse5) (let ((.cse15 (select |#memory_int| 1))) (and (= ~p_dw_pc~0 0) (= ~c_dr_st~0 0) (= ~p_num_write~0 0) (= (select |#length| 3) 12) .cse6 .cse7 (= ~q_buf_0~0 0) (= ~p_last_write~0 0) .cse2 .cse8 .cse9 .cse10 (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) .cse4 (= ~p_dw_st~0 0) (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) .cse11 .cse12 .cse13 (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) .cse14 (= (select .cse15 0) 48) (= (select .cse15 1) 0))) (and .cse6 (<= 0 ~q_free~0) .cse7 (<= ~p_dw_pc~0 1) .cse1 (<= 0 ~p_dw_pc~0) .cse8 (<= 0 ~p_num_write~0) .cse9 .cse10 (<= ~p_num_write~0 1) (<= 0 (+ ~q_buf_0~0 2147483648)) .cse4 (<= ~q_free~0 1) .cse11 .cse12 (= 2 ~p_dw_st~0) .cse13 (<= ~p_last_write~0 2147483647) .cse14) (and .cse1 (= (+ ~c_num_read~0 1) ~p_num_write~0) (= ~q_free~0 0) .cse3 .cse4 .cse5))) [2023-11-23 21:24:29,476 INFO L899 garLoopResultBuilder]: For program point L182(lines 182 194) no Hoare annotation was computed. [2023-11-23 21:24:29,476 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 157) no Hoare annotation was computed. [2023-11-23 21:24:29,476 INFO L899 garLoopResultBuilder]: For program point L257(lines 247 287) no Hoare annotation was computed. [2023-11-23 21:24:29,477 INFO L895 garLoopResultBuilder]: At program point L323-2(lines 323 335) the Hoare annotation is: (let ((.cse0 (= ~c_dr_st~0 2)) (.cse2 (= ~q_free~0 1)) (.cse6 (<= 1 |#StackHeapBarrier|)) (.cse7 (= ~c_num_read~0 0)) (.cse8 (= ~c_last_read~0 0)) (.cse9 (= 1 ~c_dr_i~0)) (.cse10 (= ~q_read_ev~0 2)) (.cse11 (= ~c_dr_pc~0 0)) (.cse12 (= ~p_dw_i~0 1)) (.cse13 (= ~a_t~0 0)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse3 (= ~c_dr_pc~0 1)) (.cse4 (= ~q_write_ev~0 2)) (.cse5 (<= 2 ~p_dw_st~0))) (or (and (= ~c_num_read~0 ~p_num_write~0) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse5) (let ((.cse14 (select |#memory_int| 1))) (and (= ~p_dw_pc~0 0) (= ~c_dr_st~0 0) (= ~p_num_write~0 0) (= (select |#length| 3) 12) .cse6 .cse7 (= ~q_buf_0~0 0) (= ~p_last_write~0 0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 0) .cse2 .cse8 .cse9 (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) .cse4 (= ~p_dw_st~0 0) (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) .cse10 .cse11 .cse12 (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) .cse13 (= (select .cse14 0) 48) (= (select .cse14 1) 0))) (and .cse6 (<= 0 ~q_free~0) .cse7 (<= ~p_dw_pc~0 1) .cse1 (<= 0 ~p_dw_pc~0) .cse8 (<= 0 ~p_num_write~0) .cse9 (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) (<= ~p_num_write~0 1) (<= 0 (+ ~q_buf_0~0 2147483648)) .cse4 (<= ~q_free~0 1) .cse10 .cse11 (= 2 ~p_dw_st~0) .cse12 (<= ~p_last_write~0 2147483647) .cse13) (and .cse1 (= (+ ~c_num_read~0 1) ~p_num_write~0) (= ~q_free~0 0) .cse3 .cse4 .cse5))) [2023-11-23 21:24:29,477 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 189) no Hoare annotation was computed. [2023-11-23 21:24:29,477 INFO L895 garLoopResultBuilder]: At program point L117-1(lines 117 137) the Hoare annotation is: (let ((.cse28 (select |#memory_int| 1))) (let ((.cse2 (= ~c_dr_pc~0 1)) (.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse4 (= ~q_free~0 0)) (.cse5 (= ~p_dw_pc~0 0)) (.cse6 (= (select |#length| 3) 12)) (.cse7 (<= 1 |#StackHeapBarrier|)) (.cse8 (= ~c_num_read~0 0)) (.cse9 (<= |ULTIMATE.start_eval_~tmp~1#1| 2147483647)) (.cse1 (= ~q_free~0 1)) (.cse10 (= ~c_last_read~0 0)) (.cse11 (= 1 ~c_dr_i~0)) (.cse12 (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1)) (.cse13 (= 2 (select |#length| 1))) (.cse14 (= (select |#valid| 3) 1)) (.cse3 (= ~q_write_ev~0 2)) (.cse15 (= (select |#valid| 1) 1)) (.cse16 (= 19 (select |#length| 2))) (.cse17 (= ~q_read_ev~0 2)) (.cse18 (<= 0 (+ |ULTIMATE.start_eval_~tmp~1#1| 2147483648))) (.cse19 (= ~c_dr_pc~0 0)) (.cse20 (not (= |ULTIMATE.start_eval_~tmp~1#1| 0))) (.cse21 (= ~p_dw_i~0 1)) (.cse22 (= (select |#valid| 0) 0)) (.cse23 (= (select |#valid| 2) 1)) (.cse24 (= ~a_t~0 0)) (.cse25 (= |ULTIMATE.start_eval_~tmp___1~0#1| 1)) (.cse26 (= (select .cse28 0) 48)) (.cse27 (= (select .cse28 1) 0))) (or (and (= ~c_num_read~0 ~p_num_write~0) (= ~c_dr_st~0 2) .cse0 .cse1 .cse2 .cse3) (and .cse0 (= (+ ~c_num_read~0 1) ~p_num_write~0) .cse4 .cse2 .cse3) (and .cse5 .cse6 .cse7 .cse8 .cse0 .cse9 (<= 0 ~p_dw_st~0) .cse10 .cse11 (<= ~p_dw_st~0 2) .cse12 .cse4 .cse13 .cse14 (<= 0 (+ ~q_buf_0~0 2147483648)) .cse3 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 (= ~p_num_write~0 1) .cse23 (<= ~p_last_write~0 2147483647) .cse24 .cse25 .cse26 .cse27) (and .cse5 (= ~c_dr_st~0 0) (= ~p_num_write~0 0) .cse6 .cse7 .cse8 (= ~q_buf_0~0 0) .cse9 (= ~p_last_write~0 0) .cse1 .cse10 .cse11 .cse12 .cse13 .cse14 .cse3 (= ~p_dw_st~0 1) .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse27)))) [2023-11-23 21:24:29,478 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 113) no Hoare annotation was computed. [2023-11-23 21:24:29,478 INFO L895 garLoopResultBuilder]: At program point L134(line 134) the Hoare annotation is: (let ((.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse1 (= ~q_free~0 0)) (.cse2 (= ~q_write_ev~0 1))) (or (and .cse0 (= (+ ~c_num_read~0 1) ~p_num_write~0) .cse1 (= ~c_dr_pc~0 1) .cse2) (let ((.cse3 (select |#memory_int| 1))) (and (= ~p_dw_pc~0 0) (= ~c_dr_st~0 0) (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= ~c_num_read~0 0) (<= ~q_buf_0~0 2147483647) .cse0 (<= |ULTIMATE.start_eval_~tmp~1#1| 2147483647) (= ~c_last_read~0 0) (= 1 ~c_dr_i~0) (= |ULTIMATE.start_start_simulation_~kernel_st~0#1| 1) .cse1 (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ ~q_buf_0~0 2147483648)) (= ~p_dw_st~0 1) (= (select |#valid| 1) 1) (= 19 (select |#length| 2)) (= ~q_read_ev~0 2) (<= 0 (+ |ULTIMATE.start_eval_~tmp~1#1| 2147483648)) (= ~c_dr_pc~0 0) (not (= |ULTIMATE.start_eval_~tmp~1#1| 0)) (= ~p_dw_i~0 1) (= (select |#valid| 0) 0) (= ~p_num_write~0 1) (= (select |#valid| 2) 1) (= ~a_t~0 0) (= |ULTIMATE.start_eval_~tmp___1~0#1| 1) (= (select .cse3 0) 48) (= (select .cse3 1) 0) .cse2)))) [2023-11-23 21:24:29,478 INFO L899 garLoopResultBuilder]: For program point L134-1(line 134) no Hoare annotation was computed. [2023-11-23 21:24:29,478 INFO L899 garLoopResultBuilder]: For program point errorEXIT(lines 15 22) no Hoare annotation was computed. [2023-11-23 21:24:29,478 INFO L902 garLoopResultBuilder]: At program point ERROR(lines 15 22) the Hoare annotation is: true [2023-11-23 21:24:29,479 INFO L899 garLoopResultBuilder]: For program point errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-23 21:24:29,481 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:24:29,484 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:24:29,502 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-23 21:24:29,505 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-23 21:24:29,505 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-23 21:24:29,506 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-23 21:24:29,506 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-23 21:24:29,507 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-23 21:24:29,507 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-23 21:24:29,507 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-23 21:24:29,508 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-23 21:24:29,511 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-23 21:24:29,512 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 [2023-11-23 21:24:29,512 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-23 21:24:29,512 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-23 21:24:29,513 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-23 21:24:29,513 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-23 21:24:29,514 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-23 21:24:29,514 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-23 21:24:29,514 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-23 21:24:29,514 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-23 21:24:29,515 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 [2023-11-23 21:24:29,518 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-23 21:24:29,519 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-11-23 21:24:29,520 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 [2023-11-23 21:24:29,520 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-23 21:24:29,520 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-23 21:24:29,521 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-23 21:24:29,521 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-23 21:24:29,521 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-11-23 21:24:29,522 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-11-23 21:24:29,522 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-23 21:24:29,522 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-23 21:24:29,523 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp___1~0 [2023-11-23 21:24:29,523 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-23 21:24:29,523 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-23 21:24:29,523 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-23 21:24:29,524 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-11-23 21:24:29,524 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 [2023-11-23 21:24:29,525 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-23 21:24:29,525 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-23 21:24:29,525 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-23 21:24:29,526 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-23 21:24:29,526 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-11-23 21:24:29,526 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-11-23 21:24:29,527 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-23 21:24:29,527 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-23 21:24:29,527 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp___1~0 [2023-11-23 21:24:29,528 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-23 21:24:29,528 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-23 21:24:29,529 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-23 21:24:29,530 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp___0~1 [2023-11-23 21:24:29,530 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-11-23 21:24:29,531 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp___0~1 [2023-11-23 21:24:29,531 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 [2023-11-23 21:24:29,532 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-23 21:24:29,532 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-23 21:24:29,532 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp___0~1 [2023-11-23 21:24:29,533 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-23 21:24:29,533 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-23 21:24:29,534 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-11-23 21:24:29,534 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp~1 [2023-11-23 21:24:29,534 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-23 21:24:29,535 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-23 21:24:29,535 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~tmp___1~0 [2023-11-23 21:24:29,535 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-23 21:24:29,535 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-23 21:24:29,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:24:29 BoogieIcfgContainer [2023-11-23 21:24:29,536 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:24:29,537 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:24:29,537 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:24:29,538 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:24:29,538 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:23:43" (3/4) ... [2023-11-23 21:24:29,541 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:24:29,544 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure immediate_notify_threads [2023-11-23 21:24:29,545 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure exists_runnable_thread [2023-11-23 21:24:29,545 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure error [2023-11-23 21:24:29,554 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2023-11-23 21:24:29,555 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-23 21:24:29,555 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 21:24:29,556 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:24:29,700 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:24:29,701 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 21:24:29,701 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:24:29,703 INFO L158 Benchmark]: Toolchain (without parser) took 46942.10ms. Allocated memory was 138.4MB in the beginning and 633.3MB in the end (delta: 494.9MB). Free memory was 95.9MB in the beginning and 540.5MB in the end (delta: -444.6MB). Peak memory consumption was 51.6MB. Max. memory is 16.1GB. [2023-11-23 21:24:29,703 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 98.6MB. Free memory is still 75.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:24:29,703 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.43ms. Allocated memory is still 138.4MB. Free memory was 95.9MB in the beginning and 83.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:24:29,704 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.94ms. Allocated memory is still 138.4MB. Free memory was 83.3MB in the beginning and 81.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:24:29,705 INFO L158 Benchmark]: Boogie Preprocessor took 28.11ms. Allocated memory is still 138.4MB. Free memory was 81.2MB in the beginning and 79.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:24:29,705 INFO L158 Benchmark]: RCFGBuilder took 651.50ms. Allocated memory is still 138.4MB. Free memory was 79.8MB in the beginning and 97.1MB in the end (delta: -17.3MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2023-11-23 21:24:29,706 INFO L158 Benchmark]: TraceAbstraction took 45604.80ms. Allocated memory was 138.4MB in the beginning and 633.3MB in the end (delta: 494.9MB). Free memory was 96.5MB in the beginning and 547.8MB in the end (delta: -451.3MB). Peak memory consumption was 307.5MB. Max. memory is 16.1GB. [2023-11-23 21:24:29,707 INFO L158 Benchmark]: Witness Printer took 164.19ms. Allocated memory is still 633.3MB. Free memory was 547.8MB in the beginning and 540.5MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 21:24:29,713 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 98.6MB. Free memory is still 75.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 424.43ms. Allocated memory is still 138.4MB. Free memory was 95.9MB in the beginning and 83.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.94ms. Allocated memory is still 138.4MB. Free memory was 83.3MB in the beginning and 81.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.11ms. Allocated memory is still 138.4MB. Free memory was 81.2MB in the beginning and 79.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 651.50ms. Allocated memory is still 138.4MB. Free memory was 79.8MB in the beginning and 97.1MB in the end (delta: -17.3MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * TraceAbstraction took 45604.80ms. Allocated memory was 138.4MB in the beginning and 633.3MB in the end (delta: 494.9MB). Free memory was 96.5MB in the beginning and 547.8MB in the end (delta: -451.3MB). Peak memory consumption was 307.5MB. Max. memory is 16.1GB. * Witness Printer took 164.19ms. Allocated memory is still 633.3MB. Free memory was 547.8MB in the beginning and 540.5MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp___1~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp___1~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp___0~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp___0~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~kernel_st~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp___0~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp~1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~tmp___1~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 45.5s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 696 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 689 mSDsluCounter, 2381 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1471 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2757 IncrementalHoareTripleChecker+Invalid, 2835 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 910 mSDtfsCounter, 2757 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 671 GetRequests, 526 SyntacticMatches, 6 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1637 ImplicationChecksByTransitivity, 22.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=294occurred in iteration=7, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 277 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 199 PreInvPairs, 240 NumberOfFragments, 1797 HoareAnnotationTreeSize, 199 FomulaSimplifications, 5930 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 13 FomulaSimplificationsInter, 6086 FormulaSimplificationTreeSizeReductionInter, 3.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 909 NumberOfCodeBlocks, 909 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1051 ConstructedInterpolants, 0 QuantifiedInterpolants, 2930 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1087 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 21 InterpolantComputations, 10 PerfectInterpolantSequences, 229/304 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 6.7s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 90, DAG_INTERPRETER_EARLY_EXITS: 7, TOOLS_POST_APPLICATIONS: 135, TOOLS_POST_TIME: 3.7s, TOOLS_POST_CALL_APPLICATIONS: 36, TOOLS_POST_CALL_TIME: 0.8s, TOOLS_POST_RETURN_APPLICATIONS: 30, TOOLS_POST_RETURN_TIME: 0.9s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 192, TOOLS_QUANTIFIERELIM_TIME: 5.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 281, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 36, DOMAIN_JOIN_TIME: 0.8s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 3, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 10, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 90, DOMAIN_ISBOTTOM_TIME: 0.2s, LOOP_SUMMARIZER_APPLICATIONS: 7, LOOP_SUMMARIZER_CACHE_MISSES: 7, LOOP_SUMMARIZER_OVERALL_TIME: 1.8s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.8s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 10, CALL_SUMMARIZER_APPLICATIONS: 30, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 2061, DAG_COMPRESSION_RETAINED_NODES: 238, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 323]: Loop Invariant Derived loop invariant: ((((((((((c_num_read == p_num_write) && (c_dr_st == 2)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (c_dr_pc == 1)) && (q_write_ev == 2)) || ((((c_dr_st == 2) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= p_dw_st))) || ((((((((((((((((p_dw_pc == 0) && (c_dr_st == 0)) && (p_num_write == 0)) && (c_num_read == 0)) && (q_buf_0 == 0)) && (p_last_write == 0)) && (kernel_st == 0)) && (q_free == 1)) && (c_last_read == 0)) && (1 == c_dr_i)) && (q_write_ev == 2)) && (p_dw_st == 0)) && (q_read_ev == 2)) && (c_dr_pc == 0)) && (p_dw_i == 1)) && (a_t == 0))) || (((((((((((((((((((0 <= q_free) && (c_num_read == 0)) && (p_dw_pc <= 1)) && (p_last_write == q_buf_0)) && (0 <= p_dw_pc)) && (c_last_read == 0)) && (0 <= p_num_write)) && (1 == c_dr_i)) && (kernel_st == 1)) && (p_num_write <= 1)) && (0 <= (q_buf_0 + 2147483648))) && (q_write_ev == 2)) && (q_free <= 1)) && (q_read_ev == 2)) && (c_dr_pc == 0)) && (2 == p_dw_st)) && (p_dw_i == 1)) && (p_last_write <= 2147483647)) && (a_t == 0))) || ((((((p_last_write == q_buf_0) && ((c_num_read + 1) == p_num_write)) && (q_free == 0)) && (c_dr_pc == 1)) && (q_write_ev == 2)) && (2 <= p_dw_st))) - InvariantResult [Line: 247]: Loop Invariant Derived loop invariant: ((((((((((c_num_read == p_num_write) && (c_dr_st == 2)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (c_dr_pc == 1)) && (q_write_ev == 2)) || ((((c_dr_st == 2) && (p_last_write == q_buf_0)) && (q_free == 1)) && (2 <= p_dw_st))) || (((((((((((((((p_dw_pc == 0) && (c_dr_st == 0)) && (p_num_write == 0)) && (c_num_read == 0)) && (q_buf_0 == 0)) && (p_last_write == 0)) && (q_free == 1)) && (c_last_read == 0)) && (1 == c_dr_i)) && (q_write_ev == 2)) && (p_dw_st == 0)) && (q_read_ev == 2)) && (c_dr_pc == 0)) && (p_dw_i == 1)) && (a_t == 0))) || ((((((((((((((((((0 <= q_free) && (c_num_read == 0)) && (p_dw_pc <= 1)) && (p_last_write == q_buf_0)) && (0 <= p_dw_pc)) && (c_last_read == 0)) && (0 <= p_num_write)) && (1 == c_dr_i)) && (p_num_write <= 1)) && (0 <= (q_buf_0 + 2147483648))) && (q_write_ev == 2)) && (q_free <= 1)) && (q_read_ev == 2)) && (c_dr_pc == 0)) && (2 == p_dw_st)) && (p_dw_i == 1)) && (p_last_write <= 2147483647)) && (a_t == 0))) || ((((((p_last_write == q_buf_0) && ((c_num_read + 1) == p_num_write)) && (q_free == 0)) && (c_dr_pc == 1)) && (q_write_ev == 2)) && (2 <= p_dw_st))) - InvariantResult [Line: 117]: Loop Invariant Derived loop invariant: (((((((((c_num_read == p_num_write) && (c_dr_st == 2)) && (p_last_write == q_buf_0)) && (q_free == 1)) && (c_dr_pc == 1)) && (q_write_ev == 2)) || (((((p_last_write == q_buf_0) && ((c_num_read + 1) == p_num_write)) && (q_free == 0)) && (c_dr_pc == 1)) && (q_write_ev == 2))) || ((((((((((((((((p_dw_pc == 0) && (c_num_read == 0)) && (p_last_write == q_buf_0)) && (0 <= p_dw_st)) && (c_last_read == 0)) && (1 == c_dr_i)) && (p_dw_st <= 2)) && (q_free == 0)) && (0 <= (q_buf_0 + 2147483648))) && (q_write_ev == 2)) && (q_read_ev == 2)) && (c_dr_pc == 0)) && (p_dw_i == 1)) && (p_num_write == 1)) && (p_last_write <= 2147483647)) && (a_t == 0))) || (((((((((((((((p_dw_pc == 0) && (c_dr_st == 0)) && (p_num_write == 0)) && (c_num_read == 0)) && (q_buf_0 == 0)) && (p_last_write == 0)) && (q_free == 1)) && (c_last_read == 0)) && (1 == c_dr_i)) && (q_write_ev == 2)) && (p_dw_st == 1)) && (q_read_ev == 2)) && (c_dr_pc == 0)) && (p_dw_i == 1)) && (a_t == 0))) - InvariantResult [Line: 160]: Loop Invariant Derived loop invariant: ((((((c_num_read == p_num_write) && (p_last_write == q_buf_0)) && (q_free == 1)) && (q_write_ev == 2)) && (c_last_read == p_last_write)) || ((((((((((((((((c_num_read == 0) && (q_buf_0 <= 2147483647)) && (p_last_write == q_buf_0)) && (c_last_read == 0)) && (1 == c_dr_i)) && (q_free == 0)) && (0 <= (p_last_write + 2147483648))) && (p_dw_pc == 1)) && (q_write_ev == 2)) && (q_read_ev == 2)) && (c_dr_pc == 0)) && (2 == p_dw_st)) && (p_dw_i == 1)) && (p_num_write == 1)) && (a_t == 0)) && (c_dr_st == 1))) - InvariantResult [Line: 220]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-11-23 21:24:29,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8670fb4f-568b-4ea4-94b6-b5e0ce644dc1/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE