./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9552a698db9701543deeff63aa990ab8fc4764b65dba5035623425bdf77554d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:02:46,977 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:02:47,088 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 05:02:47,094 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:02:47,095 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:02:47,127 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:02:47,128 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:02:47,129 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:02:47,130 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:02:47,135 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:02:47,135 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:02:47,136 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:02:47,137 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:02:47,138 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:02:47,139 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:02:47,139 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:02:47,140 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:02:47,140 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:02:47,140 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:02:47,141 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:02:47,141 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:02:47,142 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:02:47,142 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:02:47,143 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:02:47,144 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:02:47,144 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:02:47,145 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:02:47,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:02:47,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:02:47,146 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:02:47,147 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:02:47,147 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:02:47,148 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:02:47,148 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:02:47,148 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:02:47,148 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:02:47,149 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:02:47,149 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:02:47,149 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:02:47,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:47,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:02:47,151 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:02:47,151 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:02:47,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:02:47,152 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:02:47,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:02:47,152 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_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9552a698db9701543deeff63aa990ab8fc4764b65dba5035623425bdf77554d [2023-11-19 05:02:47,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:02:47,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:02:47,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:02:47,433 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:02:47,434 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:02:47,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i [2023-11-19 05:02:50,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:02:51,004 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:02:51,004 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i [2023-11-19 05:02:51,030 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/data/4521e40c0/9ca1fc083e6f41c39a9021b6b9c2e192/FLAG80cab3de5 [2023-11-19 05:02:51,046 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/data/4521e40c0/9ca1fc083e6f41c39a9021b6b9c2e192 [2023-11-19 05:02:51,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:02:51,059 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:02:51,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:51,063 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:02:51,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:02:51,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:51" (1/1) ... [2023-11-19 05:02:51,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df79f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:51, skipping insertion in model container [2023-11-19 05:02:51,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:51" (1/1) ... [2023-11-19 05:02:51,133 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:02:52,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:52,059 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:02:52,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:52,292 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:02:52,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:52 WrapperNode [2023-11-19 05:02:52,293 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:52,294 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:52,294 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:02:52,294 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:02:52,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:52" (1/1) ... [2023-11-19 05:02:52,334 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:52" (1/1) ... [2023-11-19 05:02:52,374 INFO L138 Inliner]: procedures = 486, calls = 44, calls flagged for inlining = 16, calls inlined = 21, statements flattened = 222 [2023-11-19 05:02:52,375 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:52,375 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:02:52,376 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:02:52,376 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:02:52,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:52" (1/1) ... [2023-11-19 05:02:52,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:52" (1/1) ... [2023-11-19 05:02:52,397 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:52" (1/1) ... [2023-11-19 05:02:52,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:52" (1/1) ... [2023-11-19 05:02:52,418 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:52" (1/1) ... [2023-11-19 05:02:52,430 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:52" (1/1) ... [2023-11-19 05:02:52,439 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:52" (1/1) ... [2023-11-19 05:02:52,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:52" (1/1) ... [2023-11-19 05:02:52,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:02:52,456 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:02:52,457 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:02:52,458 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:02:52,458 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:52" (1/1) ... [2023-11-19 05:02:52,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:52,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:52,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:02:52,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:02:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2023-11-19 05:02:52,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2023-11-19 05:02:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:02:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:02:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2023-11-19 05:02:52,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2023-11-19 05:02:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 05:02:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:02:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:02:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:02:52,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:02:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:02:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:02:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:02:52,533 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:02:52,834 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:02:52,837 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:02:53,226 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:02:53,239 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:02:53,239 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 05:02:53,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:53 BoogieIcfgContainer [2023-11-19 05:02:53,245 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:02:53,247 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:02:53,247 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:02:53,251 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:02:53,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:02:51" (1/3) ... [2023-11-19 05:02:53,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f6597b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:53, skipping insertion in model container [2023-11-19 05:02:53,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:52" (2/3) ... [2023-11-19 05:02:53,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f6597b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:53, skipping insertion in model container [2023-11-19 05:02:53,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:53" (3/3) ... [2023-11-19 05:02:53,254 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2023-11-19 05:02:53,271 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:02:53,272 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-11-19 05:02:53,272 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:02:53,370 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-19 05:02:53,443 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:02:53,458 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 344 places, 382 transitions, 791 flow [2023-11-19 05:02:53,461 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 344 places, 382 transitions, 791 flow [2023-11-19 05:02:53,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 382 transitions, 791 flow [2023-11-19 05:02:53,598 INFO L124 PetriNetUnfolderBase]: 41/400 cut-off events. [2023-11-19 05:02:53,598 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 05:02:53,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 400 events. 41/400 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1177 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 256. Up to 11 conditions per place. [2023-11-19 05:02:53,636 INFO L119 LiptonReduction]: Number of co-enabled transitions 14636 [2023-11-19 05:03:09,075 INFO L134 LiptonReduction]: Checked pairs total: 22888 [2023-11-19 05:03:09,076 INFO L136 LiptonReduction]: Total number of compositions: 525 [2023-11-19 05:03:09,085 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 69 places, 77 transitions, 181 flow [2023-11-19 05:03:09,182 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1003 states, 860 states have (on average 3.3197674418604652) internal successors, (2855), 1002 states have internal predecessors, (2855), 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) [2023-11-19 05:03:09,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:03:09,217 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@186955cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:03:09,217 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-19 05:03:09,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 1003 states, 860 states have (on average 3.3197674418604652) internal successors, (2855), 1002 states have internal predecessors, (2855), 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) [2023-11-19 05:03:09,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-19 05:03:09,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:09,230 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-19 05:03:09,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:09,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:09,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1379, now seen corresponding path program 1 times [2023-11-19 05:03:09,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:09,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466418775] [2023-11-19 05:03:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:09,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:09,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:09,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466418775] [2023-11-19 05:03:09,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466418775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:09,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:09,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 05:03:09,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032298995] [2023-11-19 05:03:09,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:09,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:03:09,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:09,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:03:09,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:03:09,557 INFO L87 Difference]: Start difference. First operand has 1003 states, 860 states have (on average 3.3197674418604652) internal successors, (2855), 1002 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2023-11-19 05:03:09,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:09,663 INFO L93 Difference]: Finished difference Result 989 states and 2772 transitions. [2023-11-19 05:03:09,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:03:09,666 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2023-11-19 05:03:09,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:09,691 INFO L225 Difference]: With dead ends: 989 [2023-11-19 05:03:09,692 INFO L226 Difference]: Without dead ends: 979 [2023-11-19 05:03:09,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:03:09,697 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:09,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:09,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2023-11-19 05:03:09,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 979. [2023-11-19 05:03:09,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 851 states have (on average 3.2326674500587544) internal successors, (2751), 978 states have internal predecessors, (2751), 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) [2023-11-19 05:03:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 2751 transitions. [2023-11-19 05:03:09,815 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 2751 transitions. Word has length 1 [2023-11-19 05:03:09,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:09,817 INFO L495 AbstractCegarLoop]: Abstraction has 979 states and 2751 transitions. [2023-11-19 05:03:09,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2023-11-19 05:03:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 2751 transitions. [2023-11-19 05:03:09,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:03:09,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:09,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:03:09,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:03:09,825 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:09,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:09,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1360068, now seen corresponding path program 1 times [2023-11-19 05:03:09,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:09,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413577224] [2023-11-19 05:03:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:09,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:10,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:10,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:10,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413577224] [2023-11-19 05:03:10,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413577224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:10,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:10,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:03:10,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586048267] [2023-11-19 05:03:10,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:10,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:10,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:10,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:10,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:10,061 INFO L87 Difference]: Start difference. First operand 979 states and 2751 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 05:03:10,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:10,222 INFO L93 Difference]: Finished difference Result 1349 states and 3880 transitions. [2023-11-19 05:03:10,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:10,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 05:03:10,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:10,238 INFO L225 Difference]: With dead ends: 1349 [2023-11-19 05:03:10,239 INFO L226 Difference]: Without dead ends: 1346 [2023-11-19 05:03:10,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:10,241 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:10,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 20 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:10,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2023-11-19 05:03:10,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1168. [2023-11-19 05:03:10,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1040 states have (on average 3.2971153846153847) internal successors, (3429), 1167 states have internal predecessors, (3429), 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) [2023-11-19 05:03:10,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 3429 transitions. [2023-11-19 05:03:10,306 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 3429 transitions. Word has length 3 [2023-11-19 05:03:10,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:10,306 INFO L495 AbstractCegarLoop]: Abstraction has 1168 states and 3429 transitions. [2023-11-19 05:03:10,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 05:03:10,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 3429 transitions. [2023-11-19 05:03:10,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:03:10,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:10,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:03:10,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:03:10,312 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:10,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:10,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1362160, now seen corresponding path program 1 times [2023-11-19 05:03:10,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:10,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178572669] [2023-11-19 05:03:10,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:10,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:10,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:10,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:10,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178572669] [2023-11-19 05:03:10,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178572669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:10,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:10,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:03:10,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709906518] [2023-11-19 05:03:10,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:10,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:10,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:10,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:10,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:10,473 INFO L87 Difference]: Start difference. First operand 1168 states and 3429 transitions. Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 05:03:10,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:10,576 INFO L93 Difference]: Finished difference Result 1165 states and 3426 transitions. [2023-11-19 05:03:10,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:10,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 05:03:10,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:10,590 INFO L225 Difference]: With dead ends: 1165 [2023-11-19 05:03:10,590 INFO L226 Difference]: Without dead ends: 1164 [2023-11-19 05:03:10,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:10,592 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:10,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:10,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2023-11-19 05:03:10,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1164. [2023-11-19 05:03:10,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 1038 states have (on average 3.2996146435452793) internal successors, (3425), 1163 states have internal predecessors, (3425), 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) [2023-11-19 05:03:10,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 3425 transitions. [2023-11-19 05:03:10,645 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 3425 transitions. Word has length 3 [2023-11-19 05:03:10,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:10,645 INFO L495 AbstractCegarLoop]: Abstraction has 1164 states and 3425 transitions. [2023-11-19 05:03:10,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 05:03:10,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 3425 transitions. [2023-11-19 05:03:10,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:03:10,646 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:10,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:03:10,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:03:10,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_usbErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:10,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:10,648 INFO L85 PathProgramCache]: Analyzing trace with hash 41930388, now seen corresponding path program 1 times [2023-11-19 05:03:10,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:10,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857597919] [2023-11-19 05:03:10,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:10,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:10,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:10,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857597919] [2023-11-19 05:03:10,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857597919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:10,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:10,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:03:10,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944436516] [2023-11-19 05:03:10,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:10,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:10,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:10,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:10,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:10,733 INFO L87 Difference]: Start difference. First operand 1164 states and 3425 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-19 05:03:10,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:10,834 INFO L93 Difference]: Finished difference Result 1177 states and 3516 transitions. [2023-11-19 05:03:10,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:10,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 05:03:10,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:10,848 INFO L225 Difference]: With dead ends: 1177 [2023-11-19 05:03:10,848 INFO L226 Difference]: Without dead ends: 1177 [2023-11-19 05:03:10,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:10,850 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:10,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 24 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:10,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2023-11-19 05:03:10,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1177. [2023-11-19 05:03:10,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1051 states have (on average 3.345385347288297) internal successors, (3516), 1176 states have internal predecessors, (3516), 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) [2023-11-19 05:03:10,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 3516 transitions. [2023-11-19 05:03:10,900 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 3516 transitions. Word has length 4 [2023-11-19 05:03:10,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:10,901 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 3516 transitions. [2023-11-19 05:03:10,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-19 05:03:10,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 3516 transitions. [2023-11-19 05:03:10,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:03:10,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:10,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:03:10,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:03:10,903 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:10,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:10,903 INFO L85 PathProgramCache]: Analyzing trace with hash 41930404, now seen corresponding path program 1 times [2023-11-19 05:03:10,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:10,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114531998] [2023-11-19 05:03:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:10,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:11,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:11,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:11,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114531998] [2023-11-19 05:03:11,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114531998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:11,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:11,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:03:11,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351540147] [2023-11-19 05:03:11,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:11,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:11,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:11,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:11,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:11,054 INFO L87 Difference]: Start difference. First operand 1177 states and 3516 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-19 05:03:11,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:11,222 INFO L93 Difference]: Finished difference Result 1756 states and 5041 transitions. [2023-11-19 05:03:11,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:11,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 05:03:11,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:11,240 INFO L225 Difference]: With dead ends: 1756 [2023-11-19 05:03:11,240 INFO L226 Difference]: Without dead ends: 1756 [2023-11-19 05:03:11,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:11,242 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 38 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:11,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 10 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2023-11-19 05:03:11,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1273. [2023-11-19 05:03:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1147 states have (on average 3.4507410636442892) internal successors, (3958), 1272 states have internal predecessors, (3958), 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) [2023-11-19 05:03:11,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 3958 transitions. [2023-11-19 05:03:11,299 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 3958 transitions. Word has length 4 [2023-11-19 05:03:11,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:11,300 INFO L495 AbstractCegarLoop]: Abstraction has 1273 states and 3958 transitions. [2023-11-19 05:03:11,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-19 05:03:11,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 3958 transitions. [2023-11-19 05:03:11,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:03:11,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:11,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:03:11,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:03:11,301 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:11,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:11,302 INFO L85 PathProgramCache]: Analyzing trace with hash 41930407, now seen corresponding path program 1 times [2023-11-19 05:03:11,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:11,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668729829] [2023-11-19 05:03:11,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:11,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:11,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:11,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668729829] [2023-11-19 05:03:11,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668729829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:11,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:11,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:03:11,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965016383] [2023-11-19 05:03:11,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:11,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:11,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:11,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:11,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:11,577 INFO L87 Difference]: Start difference. First operand 1273 states and 3958 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-19 05:03:11,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:11,665 INFO L93 Difference]: Finished difference Result 1135 states and 3518 transitions. [2023-11-19 05:03:11,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:11,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 05:03:11,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:11,678 INFO L225 Difference]: With dead ends: 1135 [2023-11-19 05:03:11,678 INFO L226 Difference]: Without dead ends: 1132 [2023-11-19 05:03:11,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:11,680 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:11,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 7 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:11,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2023-11-19 05:03:11,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1129. [2023-11-19 05:03:11,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 1033 states have (on average 3.38431752178122) internal successors, (3496), 1128 states have internal predecessors, (3496), 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) [2023-11-19 05:03:11,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 3496 transitions. [2023-11-19 05:03:11,742 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 3496 transitions. Word has length 4 [2023-11-19 05:03:11,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:11,743 INFO L495 AbstractCegarLoop]: Abstraction has 1129 states and 3496 transitions. [2023-11-19 05:03:11,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-19 05:03:11,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 3496 transitions. [2023-11-19 05:03:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:03:11,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:11,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:03:11,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:03:11,745 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:11,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:11,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1300004705, now seen corresponding path program 1 times [2023-11-19 05:03:11,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:11,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180212435] [2023-11-19 05:03:11,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:11,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:11,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:11,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180212435] [2023-11-19 05:03:11,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180212435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:11,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:11,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:03:11,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038438782] [2023-11-19 05:03:11,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:11,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:11,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:11,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:11,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:11,896 INFO L87 Difference]: Start difference. First operand 1129 states and 3496 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-19 05:03:12,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:12,038 INFO L93 Difference]: Finished difference Result 1474 states and 4234 transitions. [2023-11-19 05:03:12,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:12,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 05:03:12,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:12,053 INFO L225 Difference]: With dead ends: 1474 [2023-11-19 05:03:12,053 INFO L226 Difference]: Without dead ends: 1474 [2023-11-19 05:03:12,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:12,055 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 36 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:12,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 9 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:12,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2023-11-19 05:03:12,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1191. [2023-11-19 05:03:12,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1095 states have (on average 3.354337899543379) internal successors, (3673), 1190 states have internal predecessors, (3673), 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) [2023-11-19 05:03:12,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 3673 transitions. [2023-11-19 05:03:12,111 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 3673 transitions. Word has length 5 [2023-11-19 05:03:12,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:12,111 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 3673 transitions. [2023-11-19 05:03:12,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-19 05:03:12,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 3673 transitions. [2023-11-19 05:03:12,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:03:12,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:12,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:03:12,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:03:12,113 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:12,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:12,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1300004706, now seen corresponding path program 1 times [2023-11-19 05:03:12,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:12,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150826644] [2023-11-19 05:03:12,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:12,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:12,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:12,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:12,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150826644] [2023-11-19 05:03:12,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150826644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:12,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:12,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:03:12,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041488238] [2023-11-19 05:03:12,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:12,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:03:12,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:12,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:03:12,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:12,327 INFO L87 Difference]: Start difference. First operand 1191 states and 3673 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-19 05:03:12,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:12,483 INFO L93 Difference]: Finished difference Result 1292 states and 3686 transitions. [2023-11-19 05:03:12,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:03:12,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 05:03:12,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:12,497 INFO L225 Difference]: With dead ends: 1292 [2023-11-19 05:03:12,497 INFO L226 Difference]: Without dead ends: 1290 [2023-11-19 05:03:12,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:12,500 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 108 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:12,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 4 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:12,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2023-11-19 05:03:12,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1087. [2023-11-19 05:03:12,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1009 states have (on average 3.2507433102081267) internal successors, (3280), 1086 states have internal predecessors, (3280), 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) [2023-11-19 05:03:12,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 3280 transitions. [2023-11-19 05:03:12,545 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 3280 transitions. Word has length 5 [2023-11-19 05:03:12,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:12,546 INFO L495 AbstractCegarLoop]: Abstraction has 1087 states and 3280 transitions. [2023-11-19 05:03:12,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-19 05:03:12,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 3280 transitions. [2023-11-19 05:03:12,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:03:12,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:12,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:03:12,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 05:03:12,550 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:12,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:12,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1640419645, now seen corresponding path program 1 times [2023-11-19 05:03:12,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:12,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128403192] [2023-11-19 05:03:12,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:12,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:12,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:12,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128403192] [2023-11-19 05:03:12,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128403192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:12,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:12,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:03:12,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377999200] [2023-11-19 05:03:12,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:12,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:03:12,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:12,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:03:12,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:12,669 INFO L87 Difference]: Start difference. First operand 1087 states and 3280 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:03:12,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:12,821 INFO L93 Difference]: Finished difference Result 1278 states and 3806 transitions. [2023-11-19 05:03:12,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:03:12,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 05:03:12,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:12,834 INFO L225 Difference]: With dead ends: 1278 [2023-11-19 05:03:12,834 INFO L226 Difference]: Without dead ends: 1263 [2023-11-19 05:03:12,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:03:12,836 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 41 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:12,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 52 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:12,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2023-11-19 05:03:12,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1153. [2023-11-19 05:03:12,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1079 states have (on average 3.2187210379981464) internal successors, (3473), 1152 states have internal predecessors, (3473), 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) [2023-11-19 05:03:12,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 3473 transitions. [2023-11-19 05:03:12,884 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 3473 transitions. Word has length 6 [2023-11-19 05:03:12,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:12,885 INFO L495 AbstractCegarLoop]: Abstraction has 1153 states and 3473 transitions. [2023-11-19 05:03:12,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:03:12,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 3473 transitions. [2023-11-19 05:03:12,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:03:12,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:12,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:12,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 05:03:12,890 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:12,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:12,891 INFO L85 PathProgramCache]: Analyzing trace with hash 210509059, now seen corresponding path program 1 times [2023-11-19 05:03:12,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:12,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731447385] [2023-11-19 05:03:12,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:12,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:13,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:13,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731447385] [2023-11-19 05:03:13,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731447385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:13,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:13,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:03:13,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072091929] [2023-11-19 05:03:13,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:13,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:13,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:13,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:13,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:13,020 INFO L87 Difference]: Start difference. First operand 1153 states and 3473 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:03:13,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:13,126 INFO L93 Difference]: Finished difference Result 1033 states and 3009 transitions. [2023-11-19 05:03:13,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:13,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 05:03:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:13,136 INFO L225 Difference]: With dead ends: 1033 [2023-11-19 05:03:13,136 INFO L226 Difference]: Without dead ends: 1001 [2023-11-19 05:03:13,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:13,138 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 25 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:13,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 30 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:13,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2023-11-19 05:03:13,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1001. [2023-11-19 05:03:13,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 923 states have (on average 3.1473456121343446) internal successors, (2905), 1000 states have internal predecessors, (2905), 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) [2023-11-19 05:03:13,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 2905 transitions. [2023-11-19 05:03:13,179 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 2905 transitions. Word has length 8 [2023-11-19 05:03:13,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:13,180 INFO L495 AbstractCegarLoop]: Abstraction has 1001 states and 2905 transitions. [2023-11-19 05:03:13,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:03:13,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 2905 transitions. [2023-11-19 05:03:13,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:03:13,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:13,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:13,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 05:03:13,187 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:13,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:13,188 INFO L85 PathProgramCache]: Analyzing trace with hash -657415930, now seen corresponding path program 1 times [2023-11-19 05:03:13,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:13,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403910516] [2023-11-19 05:03:13,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:13,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:03:13,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:13,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403910516] [2023-11-19 05:03:13,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403910516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:13,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:13,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:03:13,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435749775] [2023-11-19 05:03:13,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:13,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:13,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:13,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:13,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:13,268 INFO L87 Difference]: Start difference. First operand 1001 states and 2905 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-19 05:03:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:13,371 INFO L93 Difference]: Finished difference Result 651 states and 1788 transitions. [2023-11-19 05:03:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:13,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 05:03:13,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:13,378 INFO L225 Difference]: With dead ends: 651 [2023-11-19 05:03:13,378 INFO L226 Difference]: Without dead ends: 643 [2023-11-19 05:03:13,378 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 [2023-11-19 05:03:13,379 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:13,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 27 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:13,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-11-19 05:03:13,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 641. [2023-11-19 05:03:13,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 594 states have (on average 2.9663299663299663) internal successors, (1762), 640 states have internal predecessors, (1762), 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) [2023-11-19 05:03:13,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1762 transitions. [2023-11-19 05:03:13,404 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1762 transitions. Word has length 9 [2023-11-19 05:03:13,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:13,404 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 1762 transitions. [2023-11-19 05:03:13,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-19 05:03:13,404 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1762 transitions. [2023-11-19 05:03:13,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:03:13,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:13,405 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:13,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 05:03:13,406 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:13,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:13,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2045119779, now seen corresponding path program 1 times [2023-11-19 05:03:13,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:13,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402343415] [2023-11-19 05:03:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:13,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:13,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:13,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:13,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402343415] [2023-11-19 05:03:13,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402343415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:13,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:13,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:03:13,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531930707] [2023-11-19 05:03:13,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:13,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:13,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:13,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:13,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:13,495 INFO L87 Difference]: Start difference. First operand 641 states and 1762 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-19 05:03:13,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:13,576 INFO L93 Difference]: Finished difference Result 561 states and 1433 transitions. [2023-11-19 05:03:13,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:13,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 05:03:13,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:13,592 INFO L225 Difference]: With dead ends: 561 [2023-11-19 05:03:13,592 INFO L226 Difference]: Without dead ends: 553 [2023-11-19 05:03:13,592 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 [2023-11-19 05:03:13,593 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:13,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 20 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:13,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2023-11-19 05:03:13,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2023-11-19 05:03:13,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 514 states have (on average 2.737354085603113) internal successors, (1407), 552 states have internal predecessors, (1407), 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) [2023-11-19 05:03:13,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1407 transitions. [2023-11-19 05:03:13,615 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1407 transitions. Word has length 9 [2023-11-19 05:03:13,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:13,616 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 1407 transitions. [2023-11-19 05:03:13,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-19 05:03:13,616 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1407 transitions. [2023-11-19 05:03:13,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:03:13,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:13,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:13,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 05:03:13,618 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:13,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:13,618 INFO L85 PathProgramCache]: Analyzing trace with hash 435842271, now seen corresponding path program 1 times [2023-11-19 05:03:13,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:13,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197454256] [2023-11-19 05:03:13,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:13,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:13,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:13,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:13,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197454256] [2023-11-19 05:03:13,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197454256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:13,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:13,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:03:13,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049503385] [2023-11-19 05:03:13,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:13,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:13,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:13,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:13,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:13,761 INFO L87 Difference]: Start difference. First operand 553 states and 1407 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-19 05:03:13,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:13,832 INFO L93 Difference]: Finished difference Result 299 states and 754 transitions. [2023-11-19 05:03:13,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:13,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-19 05:03:13,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:13,835 INFO L225 Difference]: With dead ends: 299 [2023-11-19 05:03:13,835 INFO L226 Difference]: Without dead ends: 291 [2023-11-19 05:03:13,835 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 [2023-11-19 05:03:13,837 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:13,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:13,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-19 05:03:13,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2023-11-19 05:03:13,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 272 states have (on average 2.7058823529411766) internal successors, (736), 290 states have internal predecessors, (736), 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) [2023-11-19 05:03:13,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 736 transitions. [2023-11-19 05:03:13,848 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 736 transitions. Word has length 10 [2023-11-19 05:03:13,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:13,849 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 736 transitions. [2023-11-19 05:03:13,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-19 05:03:13,849 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 736 transitions. [2023-11-19 05:03:13,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:03:13,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:13,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:13,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 05:03:13,851 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:13,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:13,851 INFO L85 PathProgramCache]: Analyzing trace with hash -692475930, now seen corresponding path program 1 times [2023-11-19 05:03:13,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:13,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273015014] [2023-11-19 05:03:13,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:13,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:13,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:13,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:13,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273015014] [2023-11-19 05:03:13,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273015014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:13,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:13,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:03:13,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516121492] [2023-11-19 05:03:13,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:13,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:13,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:13,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:13,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:13,964 INFO L87 Difference]: Start difference. First operand 291 states and 736 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-19 05:03:14,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:14,114 INFO L93 Difference]: Finished difference Result 406 states and 1012 transitions. [2023-11-19 05:03:14,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:14,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 05:03:14,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:14,118 INFO L225 Difference]: With dead ends: 406 [2023-11-19 05:03:14,118 INFO L226 Difference]: Without dead ends: 406 [2023-11-19 05:03:14,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:14,119 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:14,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 11 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:14,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-19 05:03:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 302. [2023-11-19 05:03:14,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 283 states have (on average 2.7137809187279154) internal successors, (768), 301 states have internal predecessors, (768), 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) [2023-11-19 05:03:14,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 768 transitions. [2023-11-19 05:03:14,147 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 768 transitions. Word has length 11 [2023-11-19 05:03:14,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:14,147 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 768 transitions. [2023-11-19 05:03:14,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-19 05:03:14,148 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 768 transitions. [2023-11-19 05:03:14,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:03:14,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:14,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:14,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 05:03:14,168 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:14,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:14,169 INFO L85 PathProgramCache]: Analyzing trace with hash -692475929, now seen corresponding path program 1 times [2023-11-19 05:03:14,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:14,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467789255] [2023-11-19 05:03:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:14,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:14,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:14,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:14,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467789255] [2023-11-19 05:03:14,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467789255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:14,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:14,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:03:14,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796216796] [2023-11-19 05:03:14,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:14,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:14,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:14,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:14,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:14,320 INFO L87 Difference]: Start difference. First operand 302 states and 768 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-19 05:03:14,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:14,424 INFO L93 Difference]: Finished difference Result 301 states and 766 transitions. [2023-11-19 05:03:14,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:14,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 05:03:14,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:14,427 INFO L225 Difference]: With dead ends: 301 [2023-11-19 05:03:14,427 INFO L226 Difference]: Without dead ends: 301 [2023-11-19 05:03:14,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:14,428 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 27 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:14,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 11 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:14,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-11-19 05:03:14,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2023-11-19 05:03:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 283 states have (on average 2.706713780918728) internal successors, (766), 300 states have internal predecessors, (766), 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) [2023-11-19 05:03:14,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 766 transitions. [2023-11-19 05:03:14,441 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 766 transitions. Word has length 11 [2023-11-19 05:03:14,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:14,442 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 766 transitions. [2023-11-19 05:03:14,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-19 05:03:14,442 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 766 transitions. [2023-11-19 05:03:14,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:03:14,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:14,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:14,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 05:03:14,444 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:14,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:14,444 INFO L85 PathProgramCache]: Analyzing trace with hash 8107734, now seen corresponding path program 1 times [2023-11-19 05:03:14,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:14,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436066034] [2023-11-19 05:03:14,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:14,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:14,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:14,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436066034] [2023-11-19 05:03:14,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436066034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:14,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:14,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:03:14,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644285770] [2023-11-19 05:03:14,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:14,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:03:14,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:14,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:03:14,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:14,633 INFO L87 Difference]: Start difference. First operand 301 states and 766 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-11-19 05:03:14,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:14,755 INFO L93 Difference]: Finished difference Result 308 states and 772 transitions. [2023-11-19 05:03:14,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:03:14,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 05:03:14,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:14,758 INFO L225 Difference]: With dead ends: 308 [2023-11-19 05:03:14,758 INFO L226 Difference]: Without dead ends: 307 [2023-11-19 05:03:14,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:14,759 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 26 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:14,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 12 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:14,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-19 05:03:14,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 305. [2023-11-19 05:03:14,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 287 states have (on average 2.682926829268293) internal successors, (770), 304 states have internal predecessors, (770), 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) [2023-11-19 05:03:14,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 770 transitions. [2023-11-19 05:03:14,770 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 770 transitions. Word has length 12 [2023-11-19 05:03:14,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:14,770 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 770 transitions. [2023-11-19 05:03:14,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-11-19 05:03:14,770 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 770 transitions. [2023-11-19 05:03:14,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:03:14,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:14,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:14,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 05:03:14,771 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:14,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:14,772 INFO L85 PathProgramCache]: Analyzing trace with hash 8104655, now seen corresponding path program 1 times [2023-11-19 05:03:14,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:14,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107693844] [2023-11-19 05:03:14,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:14,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:14,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:14,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107693844] [2023-11-19 05:03:14,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107693844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:14,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:14,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:03:14,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011353963] [2023-11-19 05:03:14,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:14,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:14,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:14,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:14,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:14,906 INFO L87 Difference]: Start difference. First operand 305 states and 770 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-11-19 05:03:14,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:14,968 INFO L93 Difference]: Finished difference Result 304 states and 769 transitions. [2023-11-19 05:03:14,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:14,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 05:03:14,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:14,971 INFO L225 Difference]: With dead ends: 304 [2023-11-19 05:03:14,971 INFO L226 Difference]: Without dead ends: 286 [2023-11-19 05:03:14,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:14,972 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:14,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 15 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:14,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-11-19 05:03:14,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2023-11-19 05:03:14,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 269 states have (on average 2.724907063197026) internal successors, (733), 285 states have internal predecessors, (733), 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) [2023-11-19 05:03:14,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 733 transitions. [2023-11-19 05:03:14,982 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 733 transitions. Word has length 12 [2023-11-19 05:03:14,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:14,983 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 733 transitions. [2023-11-19 05:03:14,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-11-19 05:03:14,983 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 733 transitions. [2023-11-19 05:03:14,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:03:14,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:14,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:14,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 05:03:14,984 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:14,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:14,985 INFO L85 PathProgramCache]: Analyzing trace with hash 922075784, now seen corresponding path program 1 times [2023-11-19 05:03:14,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:14,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793063965] [2023-11-19 05:03:14,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:14,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:15,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:03:15,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:15,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793063965] [2023-11-19 05:03:15,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793063965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:15,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:15,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:03:15,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789645627] [2023-11-19 05:03:15,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:15,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:15,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:15,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:15,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:15,107 INFO L87 Difference]: Start difference. First operand 286 states and 733 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-19 05:03:15,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:15,198 INFO L93 Difference]: Finished difference Result 278 states and 718 transitions. [2023-11-19 05:03:15,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:15,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 05:03:15,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:15,212 INFO L225 Difference]: With dead ends: 278 [2023-11-19 05:03:15,212 INFO L226 Difference]: Without dead ends: 278 [2023-11-19 05:03:15,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:15,213 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:15,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 7 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:15,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-19 05:03:15,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2023-11-19 05:03:15,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 263 states have (on average 2.7300380228136882) internal successors, (718), 277 states have internal predecessors, (718), 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) [2023-11-19 05:03:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 718 transitions. [2023-11-19 05:03:15,241 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 718 transitions. Word has length 13 [2023-11-19 05:03:15,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:15,242 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 718 transitions. [2023-11-19 05:03:15,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-19 05:03:15,242 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 718 transitions. [2023-11-19 05:03:15,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:03:15,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:15,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:15,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 05:03:15,243 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:15,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:15,244 INFO L85 PathProgramCache]: Analyzing trace with hash 922075785, now seen corresponding path program 1 times [2023-11-19 05:03:15,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:15,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43745239] [2023-11-19 05:03:15,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:15,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:15,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:03:15,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:15,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43745239] [2023-11-19 05:03:15,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43745239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:15,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:15,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:03:15,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868626275] [2023-11-19 05:03:15,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:15,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:15,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:15,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:15,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:15,436 INFO L87 Difference]: Start difference. First operand 278 states and 718 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-19 05:03:15,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:15,509 INFO L93 Difference]: Finished difference Result 270 states and 703 transitions. [2023-11-19 05:03:15,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:15,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 05:03:15,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:15,513 INFO L225 Difference]: With dead ends: 270 [2023-11-19 05:03:15,513 INFO L226 Difference]: Without dead ends: 270 [2023-11-19 05:03:15,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:15,514 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:15,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:15,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-19 05:03:15,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2023-11-19 05:03:15,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 257 states have (on average 2.735408560311284) internal successors, (703), 269 states have internal predecessors, (703), 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) [2023-11-19 05:03:15,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 703 transitions. [2023-11-19 05:03:15,524 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 703 transitions. Word has length 13 [2023-11-19 05:03:15,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:15,526 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 703 transitions. [2023-11-19 05:03:15,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-19 05:03:15,526 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 703 transitions. [2023-11-19 05:03:15,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:03:15,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:15,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:15,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 05:03:15,528 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:15,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:15,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1351835944, now seen corresponding path program 1 times [2023-11-19 05:03:15,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:15,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778178368] [2023-11-19 05:03:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:15,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:15,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:03:15,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:15,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778178368] [2023-11-19 05:03:15,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778178368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:15,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:15,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:03:15,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387277715] [2023-11-19 05:03:15,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:15,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:03:15,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:15,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:03:15,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:03:15,737 INFO L87 Difference]: Start difference. First operand 270 states and 703 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-19 05:03:15,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:15,818 INFO L93 Difference]: Finished difference Result 240 states and 627 transitions. [2023-11-19 05:03:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:03:15,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-19 05:03:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:15,821 INFO L225 Difference]: With dead ends: 240 [2023-11-19 05:03:15,821 INFO L226 Difference]: Without dead ends: 236 [2023-11-19 05:03:15,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:03:15,822 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 33 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:15,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 5 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:15,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-19 05:03:15,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 226. [2023-11-19 05:03:15,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 221 states have (on average 2.678733031674208) internal successors, (592), 225 states have internal predecessors, (592), 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) [2023-11-19 05:03:15,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 592 transitions. [2023-11-19 05:03:15,837 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 592 transitions. Word has length 15 [2023-11-19 05:03:15,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:15,838 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 592 transitions. [2023-11-19 05:03:15,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-19 05:03:15,838 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 592 transitions. [2023-11-19 05:03:15,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 05:03:15,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:15,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:15,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 05:03:15,840 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:15,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:15,840 INFO L85 PathProgramCache]: Analyzing trace with hash 267266330, now seen corresponding path program 1 times [2023-11-19 05:03:15,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:15,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196542340] [2023-11-19 05:03:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:15,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:03:16,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:16,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196542340] [2023-11-19 05:03:16,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196542340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:16,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:16,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:03:16,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197435104] [2023-11-19 05:03:16,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:16,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:03:16,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:16,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:03:16,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:16,202 INFO L87 Difference]: Start difference. First operand 226 states and 592 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-19 05:03:16,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:16,273 INFO L93 Difference]: Finished difference Result 195 states and 500 transitions. [2023-11-19 05:03:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:03:16,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-19 05:03:16,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:16,275 INFO L225 Difference]: With dead ends: 195 [2023-11-19 05:03:16,275 INFO L226 Difference]: Without dead ends: 171 [2023-11-19 05:03:16,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:16,276 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:16,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 4 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-19 05:03:16,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 117. [2023-11-19 05:03:16,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 115 states have (on average 2.4521739130434783) internal successors, (282), 116 states have internal predecessors, (282), 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) [2023-11-19 05:03:16,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 282 transitions. [2023-11-19 05:03:16,282 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 282 transitions. Word has length 17 [2023-11-19 05:03:16,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:16,282 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 282 transitions. [2023-11-19 05:03:16,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-19 05:03:16,283 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 282 transitions. [2023-11-19 05:03:16,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 05:03:16,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:16,284 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] [2023-11-19 05:03:16,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-19 05:03:16,284 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:16,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:16,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1503768952, now seen corresponding path program 1 times [2023-11-19 05:03:16,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:16,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86786402] [2023-11-19 05:03:16,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:16,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:16,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:03:16,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:16,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86786402] [2023-11-19 05:03:16,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86786402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:16,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:16,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:03:16,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785969286] [2023-11-19 05:03:16,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:16,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:03:16,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:16,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:03:16,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:16,581 INFO L87 Difference]: Start difference. First operand 117 states and 282 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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) [2023-11-19 05:03:16,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:16,689 INFO L93 Difference]: Finished difference Result 180 states and 425 transitions. [2023-11-19 05:03:16,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:03:16,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-19 05:03:16,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:16,691 INFO L225 Difference]: With dead ends: 180 [2023-11-19 05:03:16,691 INFO L226 Difference]: Without dead ends: 180 [2023-11-19 05:03:16,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:16,692 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:16,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 8 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:16,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-19 05:03:16,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 153. [2023-11-19 05:03:16,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 151 states have (on average 2.4503311258278146) internal successors, (370), 152 states have internal predecessors, (370), 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) [2023-11-19 05:03:16,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 370 transitions. [2023-11-19 05:03:16,699 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 370 transitions. Word has length 22 [2023-11-19 05:03:16,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:16,699 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 370 transitions. [2023-11-19 05:03:16,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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) [2023-11-19 05:03:16,699 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 370 transitions. [2023-11-19 05:03:16,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 05:03:16,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:16,701 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] [2023-11-19 05:03:16,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-19 05:03:16,701 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:16,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:16,702 INFO L85 PathProgramCache]: Analyzing trace with hash 810802488, now seen corresponding path program 2 times [2023-11-19 05:03:16,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:16,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553366336] [2023-11-19 05:03:16,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:16,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:16,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:03:16,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:16,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553366336] [2023-11-19 05:03:16,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553366336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:16,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:16,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:03:16,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313701078] [2023-11-19 05:03:16,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:16,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:03:16,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:16,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:03:16,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:03:16,958 INFO L87 Difference]: Start difference. First operand 153 states and 370 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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) [2023-11-19 05:03:17,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:17,114 INFO L93 Difference]: Finished difference Result 152 states and 369 transitions. [2023-11-19 05:03:17,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:03:17,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-19 05:03:17,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:17,115 INFO L225 Difference]: With dead ends: 152 [2023-11-19 05:03:17,115 INFO L226 Difference]: Without dead ends: 152 [2023-11-19 05:03:17,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:03:17,116 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:17,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 12 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:17,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-19 05:03:17,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 105. [2023-11-19 05:03:17,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 2.5) internal successors, (260), 104 states have internal predecessors, (260), 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) [2023-11-19 05:03:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 260 transitions. [2023-11-19 05:03:17,121 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 260 transitions. Word has length 22 [2023-11-19 05:03:17,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:17,121 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 260 transitions. [2023-11-19 05:03:17,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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) [2023-11-19 05:03:17,121 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 260 transitions. [2023-11-19 05:03:17,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 05:03:17,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:17,122 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] [2023-11-19 05:03:17,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-19 05:03:17,122 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:17,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:17,123 INFO L85 PathProgramCache]: Analyzing trace with hash -627777660, now seen corresponding path program 1 times [2023-11-19 05:03:17,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:17,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13133545] [2023-11-19 05:03:17,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:17,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:17,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:03:17,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:17,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13133545] [2023-11-19 05:03:17,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13133545] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:03:17,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112096790] [2023-11-19 05:03:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:17,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:03:17,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:03:17,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:03:17,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:03:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:17,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 05:03:17,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:17,941 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-19 05:03:17,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 27 [2023-11-19 05:03:17,979 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-19 05:03:17,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 29 [2023-11-19 05:03:18,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:03:18,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:18,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112096790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:18,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:03:18,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2023-11-19 05:03:18,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797322468] [2023-11-19 05:03:18,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:18,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:03:18,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:18,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:03:18,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:03:18,152 INFO L87 Difference]: Start difference. First operand 105 states and 260 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) [2023-11-19 05:03:18,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:18,549 INFO L93 Difference]: Finished difference Result 193 states and 487 transitions. [2023-11-19 05:03:18,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:03:18,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-19 05:03:18,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:18,551 INFO L225 Difference]: With dead ends: 193 [2023-11-19 05:03:18,551 INFO L226 Difference]: Without dead ends: 121 [2023-11-19 05:03:18,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:03:18,552 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 27 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:18,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 18 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:03:18,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-19 05:03:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-11-19 05:03:18,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 2.533333333333333) internal successors, (304), 120 states have internal predecessors, (304), 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) [2023-11-19 05:03:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 304 transitions. [2023-11-19 05:03:18,558 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 304 transitions. Word has length 23 [2023-11-19 05:03:18,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:18,558 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 304 transitions. [2023-11-19 05:03:18,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) [2023-11-19 05:03:18,558 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 304 transitions. [2023-11-19 05:03:18,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 05:03:18,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:18,560 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] [2023-11-19 05:03:18,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:03:18,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-19 05:03:18,761 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:18,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:18,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2077013308, now seen corresponding path program 2 times [2023-11-19 05:03:18,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:18,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212373526] [2023-11-19 05:03:18,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:18,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:19,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:03:19,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:19,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212373526] [2023-11-19 05:03:19,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212373526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:19,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:19,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:03:19,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576335999] [2023-11-19 05:03:19,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:19,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:03:19,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:19,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:03:19,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:03:19,136 INFO L87 Difference]: Start difference. First operand 121 states and 304 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2023-11-19 05:03:19,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:19,263 INFO L93 Difference]: Finished difference Result 153 states and 379 transitions. [2023-11-19 05:03:19,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:03:19,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-19 05:03:19,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:19,265 INFO L225 Difference]: With dead ends: 153 [2023-11-19 05:03:19,265 INFO L226 Difference]: Without dead ends: 135 [2023-11-19 05:03:19,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:03:19,266 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 22 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:19,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 11 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:03:19,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-19 05:03:19,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 115. [2023-11-19 05:03:19,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 2.5526315789473686) internal successors, (291), 114 states have internal predecessors, (291), 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) [2023-11-19 05:03:19,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 291 transitions. [2023-11-19 05:03:19,270 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 291 transitions. Word has length 23 [2023-11-19 05:03:19,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:19,271 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 291 transitions. [2023-11-19 05:03:19,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2023-11-19 05:03:19,271 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 291 transitions. [2023-11-19 05:03:19,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 05:03:19,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:19,272 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] [2023-11-19 05:03:19,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-19 05:03:19,272 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-19 05:03:19,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:19,273 INFO L85 PathProgramCache]: Analyzing trace with hash -634901564, now seen corresponding path program 3 times [2023-11-19 05:03:19,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:19,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774698118] [2023-11-19 05:03:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:19,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:03:19,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:19,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774698118] [2023-11-19 05:03:19,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774698118] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:03:19,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395790082] [2023-11-19 05:03:19,637 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 05:03:19,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:03:19,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:03:19,638 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:03:19,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:03:19,894 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 05:03:19,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:03:19,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 05:03:19,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:19,953 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-19 05:03:19,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 27 [2023-11-19 05:03:20,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:03:20,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:03:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:03:20,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395790082] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:03:20,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1591868006] [2023-11-19 05:03:20,886 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 05:03:20,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:03:20,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2023-11-19 05:03:20,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115873358] [2023-11-19 05:03:20,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:03:20,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:03:20,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:20,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:03:20,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:03:20,892 INFO L87 Difference]: Start difference. First operand 115 states and 291 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 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) [2023-11-19 05:03:21,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:21,538 INFO L93 Difference]: Finished difference Result 134 states and 344 transitions. [2023-11-19 05:03:21,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:03:21,539 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-19 05:03:21,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:21,540 INFO L225 Difference]: With dead ends: 134 [2023-11-19 05:03:21,540 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:03:21,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:03:21,541 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 56 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:21,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 32 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:03:21,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:03:21,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:03:21,542 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) [2023-11-19 05:03:21,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:03:21,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2023-11-19 05:03:21,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:21,542 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:03:21,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 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) [2023-11-19 05:03:21,542 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:03:21,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:03:21,545 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK (30 of 31 remaining) [2023-11-19 05:03:21,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (29 of 31 remaining) [2023-11-19 05:03:21,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 31 remaining) [2023-11-19 05:03:21,546 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 31 remaining) [2023-11-19 05:03:21,547 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (26 of 31 remaining) [2023-11-19 05:03:21,547 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (25 of 31 remaining) [2023-11-19 05:03:21,547 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 31 remaining) [2023-11-19 05:03:21,547 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 31 remaining) [2023-11-19 05:03:21,547 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 31 remaining) [2023-11-19 05:03:21,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 31 remaining) [2023-11-19 05:03:21,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (20 of 31 remaining) [2023-11-19 05:03:21,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 31 remaining) [2023-11-19 05:03:21,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK (18 of 31 remaining) [2023-11-19 05:03:21,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 31 remaining) [2023-11-19 05:03:21,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 31 remaining) [2023-11-19 05:03:21,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 31 remaining) [2023-11-19 05:03:21,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 31 remaining) [2023-11-19 05:03:21,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 31 remaining) [2023-11-19 05:03:21,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 31 remaining) [2023-11-19 05:03:21,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONMEMORY_LEAK (11 of 31 remaining) [2023-11-19 05:03:21,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 31 remaining) [2023-11-19 05:03:21,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 31 remaining) [2023-11-19 05:03:21,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK (8 of 31 remaining) [2023-11-19 05:03:21,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 31 remaining) [2023-11-19 05:03:21,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 31 remaining) [2023-11-19 05:03:21,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 31 remaining) [2023-11-19 05:03:21,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 31 remaining) [2023-11-19 05:03:21,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 31 remaining) [2023-11-19 05:03:21,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 31 remaining) [2023-11-19 05:03:21,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONMEMORY_LEAK (1 of 31 remaining) [2023-11-19 05:03:21,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 31 remaining) [2023-11-19 05:03:21,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:03:21,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-19 05:03:21,777 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:21,782 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 05:03:21,783 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:03:21,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:03:21 BasicIcfg [2023-11-19 05:03:21,786 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:03:21,786 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:03:21,787 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:03:21,787 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:03:21,787 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:53" (3/4) ... [2023-11-19 05:03:21,789 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:03:21,793 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_ath9k [2023-11-19 05:03:21,793 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_usb [2023-11-19 05:03:21,800 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-19 05:03:21,801 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-19 05:03:21,801 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 05:03:21,801 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:03:21,909 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:03:21,909 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:03:21,909 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:03:21,910 INFO L158 Benchmark]: Toolchain (without parser) took 30851.28ms. Allocated memory was 174.1MB in the beginning and 375.4MB in the end (delta: 201.3MB). Free memory was 127.8MB in the beginning and 136.5MB in the end (delta: -8.7MB). Peak memory consumption was 193.7MB. Max. memory is 16.1GB. [2023-11-19 05:03:21,910 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 113.2MB. Free memory was 62.3MB in the beginning and 62.2MB in the end (delta: 159.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:03:21,910 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1230.69ms. Allocated memory is still 174.1MB. Free memory was 127.3MB in the beginning and 124.4MB in the end (delta: 3.0MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. [2023-11-19 05:03:21,911 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.07ms. Allocated memory is still 174.1MB. Free memory was 123.7MB in the beginning and 120.2MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:03:21,911 INFO L158 Benchmark]: Boogie Preprocessor took 75.77ms. Allocated memory is still 174.1MB. Free memory was 120.2MB in the beginning and 117.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:03:21,911 INFO L158 Benchmark]: RCFGBuilder took 788.98ms. Allocated memory is still 174.1MB. Free memory was 117.4MB in the beginning and 90.1MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-19 05:03:21,912 INFO L158 Benchmark]: TraceAbstraction took 28538.77ms. Allocated memory was 174.1MB in the beginning and 375.4MB in the end (delta: 201.3MB). Free memory was 89.4MB in the beginning and 141.3MB in the end (delta: -51.9MB). Peak memory consumption was 150.1MB. Max. memory is 16.1GB. [2023-11-19 05:03:21,912 INFO L158 Benchmark]: Witness Printer took 123.00ms. Allocated memory is still 375.4MB. Free memory was 141.3MB in the beginning and 136.5MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:03:21,914 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 113.2MB. Free memory was 62.3MB in the beginning and 62.2MB in the end (delta: 159.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1230.69ms. Allocated memory is still 174.1MB. Free memory was 127.3MB in the beginning and 124.4MB in the end (delta: 3.0MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.07ms. Allocated memory is still 174.1MB. Free memory was 123.7MB in the beginning and 120.2MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.77ms. Allocated memory is still 174.1MB. Free memory was 120.2MB in the beginning and 117.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 788.98ms. Allocated memory is still 174.1MB. Free memory was 117.4MB in the beginning and 90.1MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 28538.77ms. Allocated memory was 174.1MB in the beginning and 375.4MB in the end (delta: 201.3MB). Free memory was 89.4MB in the beginning and 141.3MB in the end (delta: -51.9MB). Peak memory consumption was 150.1MB. Max. memory is 16.1GB. * Witness Printer took 123.00ms. Allocated memory is still 375.4MB. Free memory was 141.3MB in the beginning and 136.5MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.6s, 344 PlacesBefore, 69 PlacesAfterwards, 382 TransitionsBefore, 77 TransitionsAfterwards, 14636 CoEnabledTransitionPairs, 9 FixpointIterations, 206 TrivialSequentialCompositions, 175 ConcurrentSequentialCompositions, 44 TrivialYvCompositions, 70 ConcurrentYvCompositions, 30 ChoiceCompositions, 525 TotalNumberOfCompositions, 22888 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17318, independent: 17075, independent conditional: 0, independent unconditional: 17075, dependent: 243, dependent conditional: 0, dependent unconditional: 243, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 11044, independent: 10973, independent conditional: 0, independent unconditional: 10973, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 11044, independent: 10930, independent conditional: 0, independent unconditional: 10930, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 114, independent: 43, independent conditional: 0, independent unconditional: 43, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 355, independent: 94, independent conditional: 0, independent unconditional: 94, dependent: 261, dependent conditional: 0, dependent unconditional: 261, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 17318, independent: 6102, independent conditional: 0, independent unconditional: 6102, dependent: 172, dependent conditional: 0, dependent unconditional: 172, unknown: 11044, unknown conditional: 0, unknown unconditional: 11044] , Statistics on independence cache: Total cache size (in pairs): 289, Positive cache size: 269, Positive conditional cache size: 0, Positive unconditional cache size: 269, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: 1691]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1691]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1691]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1795]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1691]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1691]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1691]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 375 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 28.4s, OverallIterations: 26, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 15.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 702 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 702 mSDsluCounter, 420 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 187 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2518 IncrementalHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 233 mSDtfsCounter, 2518 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1273occurred in iteration=5, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 26 MinimizatonAttempts, 1526 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 334 NumberOfCodeBlocks, 334 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 328 ConstructedInterpolants, 26 QuantifiedInterpolants, 2841 SizeOfPredicates, 0 NumberOfNonLiveVariables, 604 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 29 InterpolantComputations, 25 PerfectInterpolantSequences, 25/33 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: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 19 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 05:03:21,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f0538a4-5ad3-4173-b43e-fd9f7477ffd5/bin/utaipan-verify-t7M7D8N6sZ/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