./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5 --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 4f5c1949da3ffd7703b26279578bf3cad55c86e8b0ffaff69f49645cdd541f53 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:34:03,906 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:34:03,995 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-21 19:34:04,003 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:34:04,004 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:34:04,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:34:04,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:34:04,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:34:04,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:34:04,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:34:04,043 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:34:04,044 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:34:04,045 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:34:04,046 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:34:04,046 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:34:04,047 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:34:04,048 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:34:04,049 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:34:04,050 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:34:04,051 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:34:04,052 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:34:04,053 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:34:04,054 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 19:34:04,055 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 19:34:04,056 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:34:04,057 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:34:04,057 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:34:04,058 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:34:04,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:34:04,059 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 19:34:04,060 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 19:34:04,061 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 19:34:04,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:34:04,062 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:34:04,063 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:34:04,063 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:34:04,064 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:34:04,065 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:34:04,065 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:34:04,066 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:34:04,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:34:04,067 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:34:04,068 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:34:04,069 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:34:04,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:34:04,070 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:34:04,070 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:34:04,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:34:04,071 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_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5c1949da3ffd7703b26279578bf3cad55c86e8b0ffaff69f49645cdd541f53 [2023-11-21 19:34:04,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:34:04,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:34:04,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:34:04,551 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:34:04,551 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:34:04,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i [2023-11-21 19:34:08,559 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:34:08,925 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:34:08,926 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i [2023-11-21 19:34:08,954 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/data/b7eb6b4d3/d43ed71abbf3401795366e1ebe515f9e/FLAG5f0ebed46 [2023-11-21 19:34:08,976 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/data/b7eb6b4d3/d43ed71abbf3401795366e1ebe515f9e [2023-11-21 19:34:08,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:34:08,981 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:34:08,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:34:08,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:34:08,993 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:34:08,994 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:34:08" (1/1) ... [2023-11-21 19:34:08,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d30db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:08, skipping insertion in model container [2023-11-21 19:34:08,996 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:34:08" (1/1) ... [2023-11-21 19:34:09,085 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:34:09,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:34:09,910 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:34:10,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:34:10,210 WARN L675 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:34:10,225 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:34:10,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:10 WrapperNode [2023-11-21 19:34:10,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:34:10,228 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:34:10,228 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:34:10,229 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:34:10,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:10" (1/1) ... [2023-11-21 19:34:10,303 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:10" (1/1) ... [2023-11-21 19:34:10,343 INFO L138 Inliner]: procedures = 355, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 86 [2023-11-21 19:34:10,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:34:10,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:34:10,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:34:10,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:34:10,362 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:10" (1/1) ... [2023-11-21 19:34:10,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:10" (1/1) ... [2023-11-21 19:34:10,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:10" (1/1) ... [2023-11-21 19:34:10,368 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:10" (1/1) ... [2023-11-21 19:34:10,389 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:10" (1/1) ... [2023-11-21 19:34:10,391 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:10" (1/1) ... [2023-11-21 19:34:10,399 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:10" (1/1) ... [2023-11-21 19:34:10,402 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:10" (1/1) ... [2023-11-21 19:34:10,412 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:34:10,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:34:10,414 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:34:10,414 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:34:10,416 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:10" (1/1) ... [2023-11-21 19:34:10,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:34:10,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:34:10,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:34:10,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:34:10,528 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-11-21 19:34:10,529 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2023-11-21 19:34:10,529 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2023-11-21 19:34:10,530 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2023-11-21 19:34:10,530 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2023-11-21 19:34:10,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:34:10,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:34:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 19:34:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:34:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:34:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 19:34:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:34:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:34:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:34:10,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:34:10,539 WARN L212 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 19:34:11,016 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:34:11,019 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:34:11,270 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:34:11,456 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:34:11,456 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 19:34:11,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:34:11 BoogieIcfgContainer [2023-11-21 19:34:11,459 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:34:11,462 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:34:11,463 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:34:11,467 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:34:11,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:34:08" (1/3) ... [2023-11-21 19:34:11,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49881819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:34:11, skipping insertion in model container [2023-11-21 19:34:11,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:10" (2/3) ... [2023-11-21 19:34:11,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49881819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:34:11, skipping insertion in model container [2023-11-21 19:34:11,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:34:11" (3/3) ... [2023-11-21 19:34:11,472 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_67-pthread_cond_wait_true.i [2023-11-21 19:34:11,508 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:34:11,509 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-21 19:34:11,509 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 19:34:11,582 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-21 19:34:11,619 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 46 transitions, 106 flow [2023-11-21 19:34:11,730 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 563 states, 549 states have (on average 2.610200364298725) internal successors, (1433), 562 states have internal predecessors, (1433), 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) [2023-11-21 19:34:11,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:34:11,765 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;@4adf055d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:34:11,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-21 19:34:11,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 563 states, 549 states have (on average 2.610200364298725) internal successors, (1433), 562 states have internal predecessors, (1433), 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) [2023-11-21 19:34:11,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:34:11,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:11,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:34:11,783 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:34:11,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:11,801 INFO L85 PathProgramCache]: Analyzing trace with hash 8803, now seen corresponding path program 1 times [2023-11-21 19:34:11,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:34:11,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028775000] [2023-11-21 19:34:11,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:11,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:34:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:34:12,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:34:12,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:34:12,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028775000] [2023-11-21 19:34:12,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028775000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:34:12,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:34:12,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:34:12,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408622274] [2023-11-21 19:34:12,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:34:12,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:34:12,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:34:12,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:34:12,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:12,528 INFO L87 Difference]: Start difference. First operand has 563 states, 549 states have (on average 2.610200364298725) internal successors, (1433), 562 states have internal predecessors, (1433), 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 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 19:34:12,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:34:12,674 INFO L93 Difference]: Finished difference Result 443 states and 1041 transitions. [2023-11-21 19:34:12,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:34:12,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-21 19:34:12,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:34:12,740 INFO L225 Difference]: With dead ends: 443 [2023-11-21 19:34:12,742 INFO L226 Difference]: Without dead ends: 443 [2023-11-21 19:34:12,744 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 [2023-11-21 19:34:12,752 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:34:12,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 9 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:34:12,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-11-21 19:34:12,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2023-11-21 19:34:12,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 432 states have (on average 2.4097222222222223) internal successors, (1041), 442 states have internal predecessors, (1041), 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) [2023-11-21 19:34:12,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1041 transitions. [2023-11-21 19:34:12,866 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1041 transitions. Word has length 2 [2023-11-21 19:34:12,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:34:12,866 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 1041 transitions. [2023-11-21 19:34:12,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 19:34:12,867 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1041 transitions. [2023-11-21 19:34:12,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:34:12,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:12,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:34:12,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:34:12,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:34:12,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:12,870 INFO L85 PathProgramCache]: Analyzing trace with hash 8804, now seen corresponding path program 1 times [2023-11-21 19:34:12,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:34:12,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125138814] [2023-11-21 19:34:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:12,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:34:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:34:13,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:34:13,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:34:13,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125138814] [2023-11-21 19:34:13,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125138814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:34:13,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:34:13,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:34:13,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490749877] [2023-11-21 19:34:13,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:34:13,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:34:13,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:34:13,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:34:13,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:13,137 INFO L87 Difference]: Start difference. First operand 443 states and 1041 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 19:34:13,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:34:13,222 INFO L93 Difference]: Finished difference Result 358 states and 808 transitions. [2023-11-21 19:34:13,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:34:13,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-21 19:34:13,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:34:13,227 INFO L225 Difference]: With dead ends: 358 [2023-11-21 19:34:13,227 INFO L226 Difference]: Without dead ends: 358 [2023-11-21 19:34:13,231 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 [2023-11-21 19:34:13,234 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 33 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:34:13,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 10 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:34:13,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-11-21 19:34:13,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2023-11-21 19:34:13,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 350 states have (on average 2.3085714285714287) internal successors, (808), 357 states have internal predecessors, (808), 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) [2023-11-21 19:34:13,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 808 transitions. [2023-11-21 19:34:13,278 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 808 transitions. Word has length 2 [2023-11-21 19:34:13,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:34:13,278 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 808 transitions. [2023-11-21 19:34:13,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 19:34:13,279 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 808 transitions. [2023-11-21 19:34:13,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:34:13,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:13,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:34:13,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:34:13,281 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:34:13,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:13,282 INFO L85 PathProgramCache]: Analyzing trace with hash 262490411, now seen corresponding path program 1 times [2023-11-21 19:34:13,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:34:13,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383865451] [2023-11-21 19:34:13,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:13,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:34:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:34:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:34:13,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:34:13,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383865451] [2023-11-21 19:34:13,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383865451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:34:13,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:34:13,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:34:13,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914357272] [2023-11-21 19:34:13,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:34:13,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:34:13,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:34:13,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:34:13,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:13,518 INFO L87 Difference]: Start difference. First operand 358 states and 808 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) [2023-11-21 19:34:13,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:34:13,583 INFO L93 Difference]: Finished difference Result 338 states and 770 transitions. [2023-11-21 19:34:13,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:34:13,584 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 [2023-11-21 19:34:13,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:34:13,587 INFO L225 Difference]: With dead ends: 338 [2023-11-21 19:34:13,587 INFO L226 Difference]: Without dead ends: 338 [2023-11-21 19:34:13,590 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 [2023-11-21 19:34:13,596 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:34:13,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 7 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:34:13,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-21 19:34:13,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2023-11-21 19:34:13,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 333 states have (on average 2.3123123123123124) internal successors, (770), 337 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) [2023-11-21 19:34:13,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 770 transitions. [2023-11-21 19:34:13,615 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 770 transitions. Word has length 5 [2023-11-21 19:34:13,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:34:13,616 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 770 transitions. [2023-11-21 19:34:13,616 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) [2023-11-21 19:34:13,616 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 770 transitions. [2023-11-21 19:34:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:34:13,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:13,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:34:13,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:34:13,618 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:34:13,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:13,621 INFO L85 PathProgramCache]: Analyzing trace with hash 262490412, now seen corresponding path program 1 times [2023-11-21 19:34:13,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:34:13,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102455590] [2023-11-21 19:34:13,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:13,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:34:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:34:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:34:13,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:34:13,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102455590] [2023-11-21 19:34:13,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102455590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:34:13,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:34:13,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:34:13,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874176733] [2023-11-21 19:34:13,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:34:13,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:34:13,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:34:13,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:34:13,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:13,794 INFO L87 Difference]: Start difference. First operand 338 states and 770 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) [2023-11-21 19:34:13,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:34:13,838 INFO L93 Difference]: Finished difference Result 318 states and 732 transitions. [2023-11-21 19:34:13,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:34:13,839 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 [2023-11-21 19:34:13,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:34:13,842 INFO L225 Difference]: With dead ends: 318 [2023-11-21 19:34:13,842 INFO L226 Difference]: Without dead ends: 318 [2023-11-21 19:34:13,842 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 [2023-11-21 19:34:13,844 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 26 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:34:13,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 8 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:34:13,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-21 19:34:13,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2023-11-21 19:34:13,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 316 states have (on average 2.3164556962025316) internal successors, (732), 317 states have internal predecessors, (732), 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) [2023-11-21 19:34:13,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 732 transitions. [2023-11-21 19:34:13,858 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 732 transitions. Word has length 5 [2023-11-21 19:34:13,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:34:13,858 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 732 transitions. [2023-11-21 19:34:13,859 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) [2023-11-21 19:34:13,859 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 732 transitions. [2023-11-21 19:34:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 19:34:13,861 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:13,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:34:13,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:34:13,862 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:34:13,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:13,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1982471661, now seen corresponding path program 1 times [2023-11-21 19:34:13,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:34:13,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364139831] [2023-11-21 19:34:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:13,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:34:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:34:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:34:14,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:34:14,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364139831] [2023-11-21 19:34:14,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364139831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:34:14,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:34:14,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:34:14,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799480888] [2023-11-21 19:34:14,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:34:14,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:34:14,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:34:14,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:34:14,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:34:14,024 INFO L87 Difference]: Start difference. First operand 318 states and 732 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2023-11-21 19:34:14,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:34:14,123 INFO L93 Difference]: Finished difference Result 336 states and 768 transitions. [2023-11-21 19:34:14,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:34:14,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 [2023-11-21 19:34:14,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:34:14,127 INFO L225 Difference]: With dead ends: 336 [2023-11-21 19:34:14,128 INFO L226 Difference]: Without dead ends: 336 [2023-11-21 19:34:14,128 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 [2023-11-21 19:34:14,129 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:34:14,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 41 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:34:14,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-11-21 19:34:14,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 318. [2023-11-21 19:34:14,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 316 states have (on average 2.2974683544303796) internal successors, (726), 317 states have internal predecessors, (726), 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) [2023-11-21 19:34:14,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 726 transitions. [2023-11-21 19:34:14,144 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 726 transitions. Word has length 12 [2023-11-21 19:34:14,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:34:14,144 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 726 transitions. [2023-11-21 19:34:14,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-21 19:34:14,145 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 726 transitions. [2023-11-21 19:34:14,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 19:34:14,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:14,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:34:14,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 19:34:14,149 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:34:14,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:14,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2046095263, now seen corresponding path program 1 times [2023-11-21 19:34:14,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:34:14,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504518210] [2023-11-21 19:34:14,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:14,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:34:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:34:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:34:14,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:34:14,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504518210] [2023-11-21 19:34:14,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504518210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:34:14,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:34:14,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:34:14,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558829977] [2023-11-21 19:34:14,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:34:14,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:34:14,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:34:14,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:34:14,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:14,291 INFO L87 Difference]: Start difference. First operand 318 states and 726 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-21 19:34:14,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:34:14,344 INFO L93 Difference]: Finished difference Result 255 states and 531 transitions. [2023-11-21 19:34:14,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:34:14,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-11-21 19:34:14,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:34:14,347 INFO L225 Difference]: With dead ends: 255 [2023-11-21 19:34:14,347 INFO L226 Difference]: Without dead ends: 255 [2023-11-21 19:34:14,348 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 [2023-11-21 19:34:14,349 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:34:14,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 25 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:34:14,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-21 19:34:14,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2023-11-21 19:34:14,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 253 states have (on average 2.0988142292490117) internal successors, (531), 254 states have internal predecessors, (531), 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) [2023-11-21 19:34:14,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 531 transitions. [2023-11-21 19:34:14,360 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 531 transitions. Word has length 18 [2023-11-21 19:34:14,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:34:14,361 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 531 transitions. [2023-11-21 19:34:14,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-21 19:34:14,361 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 531 transitions. [2023-11-21 19:34:14,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-21 19:34:14,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:14,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:34:14,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 19:34:14,364 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:34:14,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:14,365 INFO L85 PathProgramCache]: Analyzing trace with hash -742013733, now seen corresponding path program 1 times [2023-11-21 19:34:14,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:34:14,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320030165] [2023-11-21 19:34:14,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:14,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:34:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:34:14,399 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 19:34:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:34:14,449 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-21 19:34:14,449 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 19:34:14,450 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-11-21 19:34:14,452 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-11-21 19:34:14,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-21 19:34:14,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-11-21 19:34:14,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-21 19:34:14,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-21 19:34:14,453 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-21 19:34:14,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-11-21 19:34:14,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-11-21 19:34:14,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 13 remaining) [2023-11-21 19:34:14,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2023-11-21 19:34:14,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 13 remaining) [2023-11-21 19:34:14,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-11-21 19:34:14,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 19:34:14,459 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:34:14,465 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 19:34:14,465 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 19:34:14,511 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-21 19:34:14,517 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated [2023-11-21 19:34:14,518 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-21 19:34:14,518 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-21 19:34:14,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 07:34:14 BasicIcfg [2023-11-21 19:34:14,524 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 19:34:14,524 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 19:34:14,524 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 19:34:14,524 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 19:34:14,525 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:34:11" (3/4) ... [2023-11-21 19:34:14,527 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 19:34:14,529 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 19:34:14,530 INFO L158 Benchmark]: Toolchain (without parser) took 5548.36ms. Allocated memory was 151.0MB in the beginning and 237.0MB in the end (delta: 86.0MB). Free memory was 102.2MB in the beginning and 125.5MB in the end (delta: -23.3MB). Peak memory consumption was 64.3MB. Max. memory is 16.1GB. [2023-11-21 19:34:14,530 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 151.0MB. Free memory was 124.4MB in the beginning and 124.1MB in the end (delta: 241.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:34:14,530 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1243.33ms. Allocated memory was 151.0MB in the beginning and 237.0MB in the end (delta: 86.0MB). Free memory was 101.7MB in the beginning and 198.0MB in the end (delta: -96.3MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. [2023-11-21 19:34:14,531 INFO L158 Benchmark]: Boogie Procedure Inliner took 119.04ms. Allocated memory is still 237.0MB. Free memory was 198.0MB in the beginning and 194.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 19:34:14,531 INFO L158 Benchmark]: Boogie Preprocessor took 65.02ms. Allocated memory is still 237.0MB. Free memory was 194.8MB in the beginning and 192.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:34:14,531 INFO L158 Benchmark]: RCFGBuilder took 1045.25ms. Allocated memory is still 237.0MB. Free memory was 192.7MB in the beginning and 156.0MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-21 19:34:14,532 INFO L158 Benchmark]: TraceAbstraction took 3061.36ms. Allocated memory is still 237.0MB. Free memory was 156.0MB in the beginning and 125.5MB in the end (delta: 30.5MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2023-11-21 19:34:14,532 INFO L158 Benchmark]: Witness Printer took 4.87ms. Allocated memory is still 237.0MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:34:14,535 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 151.0MB. Free memory was 124.4MB in the beginning and 124.1MB in the end (delta: 241.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1243.33ms. Allocated memory was 151.0MB in the beginning and 237.0MB in the end (delta: 86.0MB). Free memory was 101.7MB in the beginning and 198.0MB in the end (delta: -96.3MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 119.04ms. Allocated memory is still 237.0MB. Free memory was 198.0MB in the beginning and 194.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.02ms. Allocated memory is still 237.0MB. Free memory was 194.8MB in the beginning and 192.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1045.25ms. Allocated memory is still 237.0MB. Free memory was 192.7MB in the beginning and 156.0MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3061.36ms. Allocated memory is still 237.0MB. Free memory was 156.0MB in the beginning and 125.5MB in the end (delta: 30.5MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. * Witness Printer took 4.87ms. Allocated memory is still 237.0MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L1351] 0 int g; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1373] 0 pthread_t t1; [L1374] 0 pthread_t t2; [L1375] FCALL, FORK 0 pthread_create(&t1,((void *)0),f1,((void *)0)) VAL [\old(argc)=1150, argc=1150, argv={1151:1152}, cond={4:0}, g=0, mut={3:0}, t1={5:0}, t2={6:0}] [L1377] FCALL, FORK 0 pthread_create(&t2,((void *)0),f2,((void *)0)) VAL [\old(argc)=1150, argc=1150, argv={1151:1152}, cond={4:0}, g=0, mut={3:0}, ptr={0:0}, t1={5:0}, t2={6:0}] [L1356] 1 g = 1 VAL [cond={4:0}, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}, ptr={0:0}, ptr={0:0}] [L1366] 2 g = 0 VAL [cond={4:0}, g=0, mut={3:0}, ptr={0:0}, ptr={0:0}] [L1358] CALL 1 __VERIFIER_assert(g == 1) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) VAL [cond={4:0}, g=0, mut={3:0}, ptr={0:0}, ptr={0:0}] [L18] 1 __assert_fail ("0", "13-privatized_67-pthread_cond_wait_true.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [cond={4:0}, g=0, mut={3:0}, ptr={0:0}, ptr={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1371]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1375]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1377]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 68 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 166 mSDsluCounter, 100 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 246 IncrementalHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 65 mSDtfsCounter, 246 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=563occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 113 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 19:34:14,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5 --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 4f5c1949da3ffd7703b26279578bf3cad55c86e8b0ffaff69f49645cdd541f53 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:34:17,371 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:34:17,532 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-21 19:34:17,541 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:34:17,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:34:17,590 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:34:17,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:34:17,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:34:17,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:34:17,598 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:34:17,599 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:34:17,599 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:34:17,600 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:34:17,602 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:34:17,602 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:34:17,603 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:34:17,603 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 19:34:17,604 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 19:34:17,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:34:17,606 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:34:17,606 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:34:17,607 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:34:17,608 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:34:17,608 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 19:34:17,608 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 19:34:17,609 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 19:34:17,609 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:34:17,610 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:34:17,610 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 19:34:17,611 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 19:34:17,612 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:34:17,613 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:34:17,613 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:34:17,613 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:34:17,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 19:34:17,614 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:34:17,615 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:34:17,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:34:17,615 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:34:17,616 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:34:17,616 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 19:34:17,616 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 19:34:17,617 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:34:17,617 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:34:17,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:34:17,618 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5c1949da3ffd7703b26279578bf3cad55c86e8b0ffaff69f49645cdd541f53 [2023-11-21 19:34:18,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:34:18,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:34:18,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:34:18,119 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:34:18,120 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:34:18,123 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i [2023-11-21 19:34:21,208 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:34:21,622 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:34:21,625 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/sv-benchmarks/c/goblint-regression/13-privatized_67-pthread_cond_wait_true.i [2023-11-21 19:34:21,645 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/data/090e01a08/ac315912b0964f3e89c3b09109a68bb8/FLAG4a8798dea [2023-11-21 19:34:21,659 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/data/090e01a08/ac315912b0964f3e89c3b09109a68bb8 [2023-11-21 19:34:21,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:34:21,662 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:34:21,664 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:34:21,664 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:34:21,669 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:34:21,672 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:34:21" (1/1) ... [2023-11-21 19:34:21,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1621547a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:21, skipping insertion in model container [2023-11-21 19:34:21,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:34:21" (1/1) ... [2023-11-21 19:34:21,773 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:34:22,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:34:22,434 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:34:22,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:34:22,638 WARN L675 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:34:22,649 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:34:22,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:22 WrapperNode [2023-11-21 19:34:22,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:34:22,651 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:34:22,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:34:22,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:34:22,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:22" (1/1) ... [2023-11-21 19:34:22,696 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:22" (1/1) ... [2023-11-21 19:34:22,738 INFO L138 Inliner]: procedures = 359, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 87 [2023-11-21 19:34:22,739 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:34:22,739 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:34:22,740 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:34:22,740 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:34:22,749 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:22" (1/1) ... [2023-11-21 19:34:22,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:22" (1/1) ... [2023-11-21 19:34:22,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:22" (1/1) ... [2023-11-21 19:34:22,756 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:22" (1/1) ... [2023-11-21 19:34:22,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:22" (1/1) ... [2023-11-21 19:34:22,774 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:22" (1/1) ... [2023-11-21 19:34:22,780 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:22" (1/1) ... [2023-11-21 19:34:22,783 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:22" (1/1) ... [2023-11-21 19:34:22,791 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:34:22,792 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:34:22,792 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:34:22,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:34:22,793 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:22" (1/1) ... [2023-11-21 19:34:22,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:34:22,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:34:22,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:34:22,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:34:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 19:34:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-11-21 19:34:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2023-11-21 19:34:22,906 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2023-11-21 19:34:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2023-11-21 19:34:22,906 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2023-11-21 19:34:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:34:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:34:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 19:34:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 19:34:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-21 19:34:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 19:34:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 19:34:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:34:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:34:22,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:34:22,912 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 19:34:23,335 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:34:23,337 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:34:23,578 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:34:23,801 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:34:23,801 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 19:34:23,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:34:23 BoogieIcfgContainer [2023-11-21 19:34:23,803 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:34:23,805 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:34:23,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:34:23,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:34:23,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:34:21" (1/3) ... [2023-11-21 19:34:23,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ffd23c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:34:23, skipping insertion in model container [2023-11-21 19:34:23,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:34:22" (2/3) ... [2023-11-21 19:34:23,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ffd23c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:34:23, skipping insertion in model container [2023-11-21 19:34:23,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:34:23" (3/3) ... [2023-11-21 19:34:23,813 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_67-pthread_cond_wait_true.i [2023-11-21 19:34:23,832 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:34:23,832 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-21 19:34:23,832 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 19:34:23,894 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-21 19:34:23,923 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 46 transitions, 106 flow [2023-11-21 19:34:24,001 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 563 states, 549 states have (on average 2.610200364298725) internal successors, (1433), 562 states have internal predecessors, (1433), 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) [2023-11-21 19:34:24,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:34:24,036 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;@387a32f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:34:24,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-21 19:34:24,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 563 states, 549 states have (on average 2.610200364298725) internal successors, (1433), 562 states have internal predecessors, (1433), 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) [2023-11-21 19:34:24,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:34:24,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:24,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:34:24,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:34:24,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:24,058 INFO L85 PathProgramCache]: Analyzing trace with hash 8867, now seen corresponding path program 1 times [2023-11-21 19:34:24,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:34:24,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005595145] [2023-11-21 19:34:24,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:24,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:34:24,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:34:24,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:34:24,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-21 19:34:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:34:24,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:34:24,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:34:24,385 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-21 19:34:24,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 21 treesize of output 15 [2023-11-21 19:34:24,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:34:24,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:34:24,405 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:34:24,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005595145] [2023-11-21 19:34:24,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005595145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:34:24,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:34:24,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:34:24,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892886442] [2023-11-21 19:34:24,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:34:24,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:34:24,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:34:24,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:34:24,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:24,453 INFO L87 Difference]: Start difference. First operand has 563 states, 549 states have (on average 2.610200364298725) internal successors, (1433), 562 states have internal predecessors, (1433), 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 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 19:34:24,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:34:24,575 INFO L93 Difference]: Finished difference Result 443 states and 1041 transitions. [2023-11-21 19:34:24,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:34:24,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-21 19:34:24,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:34:24,593 INFO L225 Difference]: With dead ends: 443 [2023-11-21 19:34:24,594 INFO L226 Difference]: Without dead ends: 443 [2023-11-21 19:34:24,595 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 [2023-11-21 19:34:24,599 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:34:24,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 9 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:34:24,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-11-21 19:34:24,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2023-11-21 19:34:24,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 432 states have (on average 2.4097222222222223) internal successors, (1041), 442 states have internal predecessors, (1041), 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) [2023-11-21 19:34:24,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1041 transitions. [2023-11-21 19:34:24,704 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1041 transitions. Word has length 2 [2023-11-21 19:34:24,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:34:24,705 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 1041 transitions. [2023-11-21 19:34:24,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 19:34:24,705 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1041 transitions. [2023-11-21 19:34:24,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:34:24,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:24,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:34:24,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-21 19:34:24,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:34:24,911 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:34:24,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:24,912 INFO L85 PathProgramCache]: Analyzing trace with hash 8868, now seen corresponding path program 1 times [2023-11-21 19:34:24,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:34:24,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144012012] [2023-11-21 19:34:24,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:24,914 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:34:24,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:34:24,917 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:34:24,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-21 19:34:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:34:25,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 19:34:25,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:34:25,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 19:34:25,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-21 19:34:25,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-21 19:34:25,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:34:25,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:34:25,173 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:34:25,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144012012] [2023-11-21 19:34:25,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144012012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:34:25,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:34:25,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:34:25,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864732925] [2023-11-21 19:34:25,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:34:25,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:34:25,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:34:25,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:34:25,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:25,177 INFO L87 Difference]: Start difference. First operand 443 states and 1041 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 19:34:25,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:34:25,279 INFO L93 Difference]: Finished difference Result 358 states and 808 transitions. [2023-11-21 19:34:25,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:34:25,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-21 19:34:25,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:34:25,287 INFO L225 Difference]: With dead ends: 358 [2023-11-21 19:34:25,288 INFO L226 Difference]: Without dead ends: 358 [2023-11-21 19:34:25,289 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 [2023-11-21 19:34:25,291 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 33 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:34:25,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 10 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:34:25,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-11-21 19:34:25,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2023-11-21 19:34:25,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 350 states have (on average 2.3085714285714287) internal successors, (808), 357 states have internal predecessors, (808), 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) [2023-11-21 19:34:25,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 808 transitions. [2023-11-21 19:34:25,342 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 808 transitions. Word has length 2 [2023-11-21 19:34:25,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:34:25,342 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 808 transitions. [2023-11-21 19:34:25,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 19:34:25,344 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 808 transitions. [2023-11-21 19:34:25,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:34:25,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:25,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:34:25,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-21 19:34:25,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:34:25,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:34:25,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:25,553 INFO L85 PathProgramCache]: Analyzing trace with hash 264399021, now seen corresponding path program 1 times [2023-11-21 19:34:25,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:34:25,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488572017] [2023-11-21 19:34:25,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:25,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:34:25,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:34:25,561 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:34:25,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-21 19:34:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:34:25,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:34:25,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:34:25,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 19:34:25,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 19:34:25,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 19:34:25,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:34:25,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:34:25,777 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:34:25,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488572017] [2023-11-21 19:34:25,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488572017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:34:25,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:34:25,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:34:25,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394324663] [2023-11-21 19:34:25,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:34:25,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:34:25,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:34:25,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:34:25,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:25,780 INFO L87 Difference]: Start difference. First operand 358 states and 808 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) [2023-11-21 19:34:25,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:34:25,854 INFO L93 Difference]: Finished difference Result 338 states and 770 transitions. [2023-11-21 19:34:25,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:34:25,855 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 [2023-11-21 19:34:25,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:34:25,858 INFO L225 Difference]: With dead ends: 338 [2023-11-21 19:34:25,858 INFO L226 Difference]: Without dead ends: 338 [2023-11-21 19:34:25,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:25,859 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:34:25,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 7 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:34:25,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-21 19:34:25,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2023-11-21 19:34:25,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 333 states have (on average 2.3123123123123124) internal successors, (770), 337 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) [2023-11-21 19:34:25,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 770 transitions. [2023-11-21 19:34:25,875 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 770 transitions. Word has length 5 [2023-11-21 19:34:25,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:34:25,876 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 770 transitions. [2023-11-21 19:34:25,876 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) [2023-11-21 19:34:25,876 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 770 transitions. [2023-11-21 19:34:25,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:34:25,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:25,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:34:25,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-21 19:34:26,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:34:26,082 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:34:26,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:26,083 INFO L85 PathProgramCache]: Analyzing trace with hash 264399022, now seen corresponding path program 1 times [2023-11-21 19:34:26,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:34:26,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386208554] [2023-11-21 19:34:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:26,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:34:26,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:34:26,086 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:34:26,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-21 19:34:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:34:26,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:34:26,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:34:26,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 19:34:26,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 19:34:26,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 19:34:26,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:34:26,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:34:26,338 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:34:26,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386208554] [2023-11-21 19:34:26,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386208554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:34:26,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:34:26,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:34:26,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525973494] [2023-11-21 19:34:26,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:34:26,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:34:26,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:34:26,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:34:26,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:26,340 INFO L87 Difference]: Start difference. First operand 338 states and 770 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) [2023-11-21 19:34:26,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:34:26,413 INFO L93 Difference]: Finished difference Result 318 states and 732 transitions. [2023-11-21 19:34:26,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:34:26,414 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 [2023-11-21 19:34:26,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:34:26,417 INFO L225 Difference]: With dead ends: 318 [2023-11-21 19:34:26,417 INFO L226 Difference]: Without dead ends: 318 [2023-11-21 19:34:26,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:26,420 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 26 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:34:26,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 8 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:34:26,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-21 19:34:26,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2023-11-21 19:34:26,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 316 states have (on average 2.3164556962025316) internal successors, (732), 317 states have internal predecessors, (732), 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) [2023-11-21 19:34:26,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 732 transitions. [2023-11-21 19:34:26,438 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 732 transitions. Word has length 5 [2023-11-21 19:34:26,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:34:26,438 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 732 transitions. [2023-11-21 19:34:26,439 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) [2023-11-21 19:34:26,439 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 732 transitions. [2023-11-21 19:34:26,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 19:34:26,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:26,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:34:26,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-21 19:34:26,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:34:26,646 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:34:26,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:26,646 INFO L85 PathProgramCache]: Analyzing trace with hash 288617363, now seen corresponding path program 1 times [2023-11-21 19:34:26,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:34:26,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881736519] [2023-11-21 19:34:26,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:26,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:34:26,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:34:26,649 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:34:26,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-21 19:34:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:34:26,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:34:26,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:34:26,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:34:26,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:34:26,847 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:34:26,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881736519] [2023-11-21 19:34:26,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881736519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:34:26,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:34:26,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:34:26,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956374863] [2023-11-21 19:34:26,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:34:26,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:34:26,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:34:26,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:34:26,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:34:26,850 INFO L87 Difference]: Start difference. First operand 318 states and 732 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2023-11-21 19:34:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:34:27,004 INFO L93 Difference]: Finished difference Result 345 states and 789 transitions. [2023-11-21 19:34:27,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:34:27,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 [2023-11-21 19:34:27,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:34:27,008 INFO L225 Difference]: With dead ends: 345 [2023-11-21 19:34:27,008 INFO L226 Difference]: Without dead ends: 345 [2023-11-21 19:34:27,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:34:27,009 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:34:27,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 40 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:34:27,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-11-21 19:34:27,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 318. [2023-11-21 19:34:27,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 316 states have (on average 2.2974683544303796) internal successors, (726), 317 states have internal predecessors, (726), 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) [2023-11-21 19:34:27,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 726 transitions. [2023-11-21 19:34:27,024 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 726 transitions. Word has length 12 [2023-11-21 19:34:27,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:34:27,025 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 726 transitions. [2023-11-21 19:34:27,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-21 19:34:27,025 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 726 transitions. [2023-11-21 19:34:27,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 19:34:27,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:27,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:34:27,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-21 19:34:27,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:34:27,241 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:34:27,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:27,241 INFO L85 PathProgramCache]: Analyzing trace with hash 744708797, now seen corresponding path program 1 times [2023-11-21 19:34:27,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:34:27,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634853279] [2023-11-21 19:34:27,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:27,243 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:34:27,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:34:27,244 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:34:27,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-21 19:34:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:34:27,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:34:27,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:34:27,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-11-21 19:34:27,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:34:27,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:34:27,452 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:34:27,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634853279] [2023-11-21 19:34:27,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634853279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:34:27,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:34:27,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:34:27,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695950578] [2023-11-21 19:34:27,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:34:27,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:34:27,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:34:27,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:34:27,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:27,454 INFO L87 Difference]: Start difference. First operand 318 states and 726 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-21 19:34:27,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:34:27,534 INFO L93 Difference]: Finished difference Result 255 states and 531 transitions. [2023-11-21 19:34:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:34:27,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-11-21 19:34:27,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:34:27,537 INFO L225 Difference]: With dead ends: 255 [2023-11-21 19:34:27,538 INFO L226 Difference]: Without dead ends: 255 [2023-11-21 19:34:27,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:34:27,539 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:34:27,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 25 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:34:27,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-21 19:34:27,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2023-11-21 19:34:27,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 253 states have (on average 2.0988142292490117) internal successors, (531), 254 states have internal predecessors, (531), 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) [2023-11-21 19:34:27,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 531 transitions. [2023-11-21 19:34:27,555 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 531 transitions. Word has length 18 [2023-11-21 19:34:27,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:34:27,556 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 531 transitions. [2023-11-21 19:34:27,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-21 19:34:27,556 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 531 transitions. [2023-11-21 19:34:27,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-21 19:34:27,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:34:27,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:34:27,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-21 19:34:27,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:34:27,768 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 19:34:27,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:34:27,769 INFO L85 PathProgramCache]: Analyzing trace with hash 948718237, now seen corresponding path program 1 times [2023-11-21 19:34:27,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:34:27,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862877856] [2023-11-21 19:34:27,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:34:27,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:34:27,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:34:27,771 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:34:27,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-21 19:34:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:34:27,954 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 19:34:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:34:28,096 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-21 19:34:28,097 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 19:34:28,098 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-11-21 19:34:28,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-11-21 19:34:28,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-21 19:34:28,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-11-21 19:34:28,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-21 19:34:28,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-21 19:34:28,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-21 19:34:28,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-11-21 19:34:28,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-11-21 19:34:28,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 13 remaining) [2023-11-21 19:34:28,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2023-11-21 19:34:28,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 13 remaining) [2023-11-21 19:34:28,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-11-21 19:34:28,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-21 19:34:28,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:34:28,306 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:34:28,312 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 19:34:28,312 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 19:34:28,352 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-21 19:34:28,356 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated [2023-11-21 19:34:28,357 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-21 19:34:28,357 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-21 19:34:28,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 07:34:28 BasicIcfg [2023-11-21 19:34:28,362 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 19:34:28,363 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 19:34:28,363 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 19:34:28,364 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 19:34:28,364 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:34:23" (3/4) ... [2023-11-21 19:34:28,366 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 19:34:28,367 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 19:34:28,368 INFO L158 Benchmark]: Toolchain (without parser) took 6705.52ms. Allocated memory was 71.3MB in the beginning and 111.1MB in the end (delta: 39.8MB). Free memory was 44.8MB in the beginning and 74.1MB in the end (delta: -29.3MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2023-11-21 19:34:28,368 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 71.3MB. Free memory was 47.0MB in the beginning and 46.9MB in the end (delta: 114.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:34:28,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 986.81ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 44.7MB in the beginning and 42.0MB in the end (delta: 2.6MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. [2023-11-21 19:34:28,369 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.81ms. Allocated memory is still 92.3MB. Free memory was 42.0MB in the beginning and 68.1MB in the end (delta: -26.1MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2023-11-21 19:34:28,370 INFO L158 Benchmark]: Boogie Preprocessor took 51.98ms. Allocated memory is still 92.3MB. Free memory was 68.1MB in the beginning and 65.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:34:28,370 INFO L158 Benchmark]: RCFGBuilder took 1010.95ms. Allocated memory is still 92.3MB. Free memory was 65.1MB in the beginning and 40.9MB in the end (delta: 24.1MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2023-11-21 19:34:28,370 INFO L158 Benchmark]: TraceAbstraction took 4557.53ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 40.0MB in the beginning and 75.0MB in the end (delta: -35.0MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2023-11-21 19:34:28,371 INFO L158 Benchmark]: Witness Printer took 4.32ms. Allocated memory is still 111.1MB. Free memory was 75.0MB in the beginning and 74.1MB in the end (delta: 866.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:34:28,373 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 71.3MB. Free memory was 47.0MB in the beginning and 46.9MB in the end (delta: 114.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 986.81ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 44.7MB in the beginning and 42.0MB in the end (delta: 2.6MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.81ms. Allocated memory is still 92.3MB. Free memory was 42.0MB in the beginning and 68.1MB in the end (delta: -26.1MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.98ms. Allocated memory is still 92.3MB. Free memory was 68.1MB in the beginning and 65.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1010.95ms. Allocated memory is still 92.3MB. Free memory was 65.1MB in the beginning and 40.9MB in the end (delta: 24.1MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4557.53ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 40.0MB in the beginning and 75.0MB in the end (delta: -35.0MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. * Witness Printer took 4.32ms. Allocated memory is still 111.1MB. Free memory was 75.0MB in the beginning and 74.1MB in the end (delta: 866.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L1351] 0 int g; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1373] 0 pthread_t t1; [L1374] 0 pthread_t t2; [L1375] FCALL, FORK 0 pthread_create(&t1,((void *)0),f1,((void *)0)) VAL [\old(argc)=200, argc=200, argv={202:201}, cond={4:0}, g=0, mut={3:0}, t1={6:0}, t2={5:0}] [L1377] FCALL, FORK 0 pthread_create(&t2,((void *)0),f2,((void *)0)) VAL [\old(argc)=200, argc=200, argv={202:201}, cond={4:0}, g=0, mut={3:0}, ptr={0:0}, t1={6:0}, t2={5:0}] [L1356] 1 g = 1 VAL [cond={4:0}, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}, ptr={0:0}, ptr={0:0}] [L1366] 2 g = 0 VAL [cond={4:0}, g=0, mut={3:0}, ptr={0:0}, ptr={0:0}] [L1358] CALL 1 __VERIFIER_assert(g == 1) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) VAL [cond={4:0}, g=0, mut={3:0}, ptr={0:0}, ptr={0:0}] [L18] 1 __assert_fail ("0", "13-privatized_67-pthread_cond_wait_true.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [cond={4:0}, g=0, mut={3:0}, ptr={0:0}, ptr={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1371]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1375]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1377]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 68 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 167 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 167 mSDsluCounter, 99 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 247 IncrementalHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 65 mSDtfsCounter, 247 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=563occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 27 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 124 SizeOfPredicates, 6 NumberOfNonLiveVariables, 442 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 19:34:28,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e13c028-e066-46b2-9942-032c9e4e4788/bin/utaipan-verify-QoSU8krkJ5/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: UNKNOWN: Overapproximated counterexample