./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version 30e01a73
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_81b1b905-b171-4384-84e1-ca340546d62c/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b1b905-b171-4384-84e1-ca340546d62c/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b1b905-b171-4384-84e1-ca340546d62c/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b1b905-b171-4384-84e1-ca340546d62c/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b1b905-b171-4384-84e1-ca340546d62c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b1b905-b171-4384-84e1-ca340546d62c/bin/utaipan-verify-mE87zJ7Ire --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 8d306ff8cfbc22ceebe04735dbb58cf2d83206c78fa42d12e01716373b332b54
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-30e01a7
[2023-11-23 21:10:10,115 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-23 21:10:10,190 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b1b905-b171-4384-84e1-ca340546d62c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf
[2023-11-23 21:10:10,195 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-23 21:10:10,196 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-23 21:10:10,222 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-23 21:10:10,223 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-23 21:10:10,224 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-23 21:10:10,225 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-23 21:10:10,225 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-23 21:10:10,226 INFO L153 SettingsManager]: * User list type=DISABLED
[2023-11-23 21:10:10,226 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-11-23 21:10:10,227 INFO L153 SettingsManager]: * Explicit value domain=true
[2023-11-23 21:10:10,227 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-11-23 21:10:10,228 INFO L153 SettingsManager]: * Octagon Domain=false
[2023-11-23 21:10:10,228 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain
[2023-11-23 21:10:10,229 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true
[2023-11-23 21:10:10,229 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true
[2023-11-23 21:10:10,230 INFO L153 SettingsManager]: * Interval Domain=false
[2023-11-23 21:10:10,230 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-11-23 21:10:10,231 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer
[2023-11-23 21:10:10,231 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC
[2023-11-23 21:10:10,232 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-23 21:10:10,232 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-23 21:10:10,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-23 21:10:10,233 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-23 21:10:10,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-23 21:10:10,234 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-23 21:10:10,234 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-23 21:10:10,235 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2023-11-23 21:10:10,235 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2023-11-23 21:10:10,235 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2023-11-23 21:10:10,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-23 21:10:10,236 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-11-23 21:10:10,236 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2023-11-23 21:10:10,236 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-23 21:10:10,237 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-23 21:10:10,237 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-23 21:10:10,237 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2023-11-23 21:10:10,237 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-23 21:10:10,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-23 21:10:10,238 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-23 21:10:10,238 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-23 21:10:10,238 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN
[2023-11-23 21:10:10,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-23 21:10:10,239 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-23 21:10:10,239 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE
[2023-11-23 21:10:10,239 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-23 21:10:10,239 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_81b1b905-b171-4384-84e1-ca340546d62c/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b1b905-b171-4384-84e1-ca340546d62c/bin/utaipan-verify-mE87zJ7Ire
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d306ff8cfbc22ceebe04735dbb58cf2d83206c78fa42d12e01716373b332b54
[2023-11-23 21:10:10,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-23 21:10:10,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-23 21:10:10,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-23 21:10:10,542 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-23 21:10:10,542 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-23 21:10:10,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b1b905-b171-4384-84e1-ca340546d62c/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i
[2023-11-23 21:10:13,759 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-23 21:10:14,128 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-23 21:10:14,129 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b1b905-b171-4384-84e1-ca340546d62c/sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i
[2023-11-23 21:10:14,150 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b1b905-b171-4384-84e1-ca340546d62c/bin/utaipan-verify-mE87zJ7Ire/data/1801f3779/c9ac04fb9ffe4bf397e6963cf522fbef/FLAGbf144fc0e
[2023-11-23 21:10:14,171 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b1b905-b171-4384-84e1-ca340546d62c/bin/utaipan-verify-mE87zJ7Ire/data/1801f3779/c9ac04fb9ffe4bf397e6963cf522fbef
[2023-11-23 21:10:14,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-23 21:10:14,182 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-23 21:10:14,184 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-23 21:10:14,184 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-23 21:10:14,189 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-23 21:10:14,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:14" (1/1) ...
[2023-11-23 21:10:14,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ebb410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:14, skipping insertion in model container
[2023-11-23 21:10:14,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:14" (1/1) ...
[2023-11-23 21:10:14,259 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-23 21:10:14,579 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-23 21:10:14,597 INFO L202 MainTranslator]: Completed pre-run
[2023-11-23 21:10:14,653 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-23 21:10:14,781 INFO L206 MainTranslator]: Completed translation
[2023-11-23 21:10:14,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:14 WrapperNode
[2023-11-23 21:10:14,782 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-23 21:10:14,784 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-23 21:10:14,785 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-23 21:10:14,785 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-23 21:10:14,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:14" (1/1) ...
[2023-11-23 21:10:14,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:14" (1/1) ...
[2023-11-23 21:10:14,860 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37
[2023-11-23 21:10:14,861 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-23 21:10:14,861 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-23 21:10:14,862 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-23 21:10:14,862 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-23 21:10:14,872 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:14" (1/1) ...
[2023-11-23 21:10:14,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:14" (1/1) ...
[2023-11-23 21:10:14,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:14" (1/1) ...
[2023-11-23 21:10:14,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:14" (1/1) ...
[2023-11-23 21:10:14,884 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:14" (1/1) ...
[2023-11-23 21:10:14,885 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:14" (1/1) ...
[2023-11-23 21:10:14,887 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:14" (1/1) ...
[2023-11-23 21:10:14,888 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:14" (1/1) ...
[2023-11-23 21:10:14,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-23 21:10:14,892 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-23 21:10:14,904 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-23 21:10:14,905 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-23 21:10:14,906 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:14" (1/1) ...
[2023-11-23 21:10:14,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-23 21:10:14,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b1b905-b171-4384-84e1-ca340546d62c/bin/utaipan-verify-mE87zJ7Ire/z3
[2023-11-23 21:10:14,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b1b905-b171-4384-84e1-ca340546d62c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-23 21:10:14,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b1b905-b171-4384-84e1-ca340546d62c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-23 21:10:14,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-11-23 21:10:14,977 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2023-11-23 21:10:14,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-23 21:10:14,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-23 21:10:14,977 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun
[2023-11-23 21:10:14,977 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun
[2023-11-23 21:10:14,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-23 21:10:14,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-23 21:10:14,978 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock
[2023-11-23 21:10:14,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-23 21:10:14,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-23 21:10:14,980 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-11-23 21:10:15,113 INFO L241 CfgBuilder]: Building ICFG
[2023-11-23 21:10:15,115 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-23 21:10:15,304 INFO L282 CfgBuilder]: Performing block encoding
[2023-11-23 21:10:15,474 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-23 21:10:15,474 INFO L309 CfgBuilder]: Removed 0 assume(true) statements.
[2023-11-23 21:10:15,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:15 BoogieIcfgContainer
[2023-11-23 21:10:15,475 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-23 21:10:15,477 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-23 21:10:15,478 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-23 21:10:15,481 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-23 21:10:15,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:10:14" (1/3) ...
[2023-11-23 21:10:15,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c15175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:10:15, skipping insertion in model container
[2023-11-23 21:10:15,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:14" (2/3) ...
[2023-11-23 21:10:15,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c15175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:10:15, skipping insertion in model container
[2023-11-23 21:10:15,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:15" (3/3) ...
[2023-11-23 21:10:15,485 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_22-deref_read.i
[2023-11-23 21:10:15,503 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-23 21:10:15,504 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations.
[2023-11-23 21:10:15,504 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-11-23 21:10:15,555 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2023-11-23 21:10:15,609 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 24 transitions, 52 flow
[2023-11-23 21:10:15,636 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 101 states, 88 states have (on average 2.0113636363636362) internal successors, (177), 100 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:10:15,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-23 21:10:15,662 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;@7ab60f88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-23 21:10:15,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations.
[2023-11-23 21:10:15,666 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 88 states have (on average 2.0113636363636362) internal successors, (177), 100 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:10:15,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3
[2023-11-23 21:10:15,673 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-23 21:10:15,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1]
[2023-11-23 21:10:15,675 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-23 21:10:15,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 21:10:15,681 INFO L85 PathProgramCache]: Analyzing trace with hash 4757, now seen corresponding path program 1 times
[2023-11-23 21:10:15,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-23 21:10:15,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097932216]
[2023-11-23 21:10:15,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 21:10:15,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 21:10:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 21:10:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-23 21:10:16,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-23 21:10:16,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097932216]
[2023-11-23 21:10:16,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097932216] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 21:10:16,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 21:10:16,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-23 21:10:16,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045024684]
[2023-11-23 21:10:16,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 21:10:16,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-23 21:10:16,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-23 21:10:16,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-23 21:10:16,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-23 21:10:16,114 INFO L87 Difference]: Start difference. First operand has 101 states, 88 states have (on average 2.0113636363636362) internal successors, (177), 100 states have internal predecessors, (177), 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)
[2023-11-23 21:10:16,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-23 21:10:16,239 INFO L93 Difference]: Finished difference Result 100 states and 176 transitions.
[2023-11-23 21:10:16,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-23 21:10:16,242 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
[2023-11-23 21:10:16,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-23 21:10:16,257 INFO L225 Difference]: With dead ends: 100
[2023-11-23 21:10:16,257 INFO L226 Difference]: Without dead ends: 100
[2023-11-23 21:10:16,260 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
[2023-11-23 21:10:16,268 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-23 21:10:16,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 9 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-23 21:10:16,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2023-11-23 21:10:16,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100.
[2023-11-23 21:10:16,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 88 states have (on average 2.0) internal successors, (176), 99 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:10:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 176 transitions.
[2023-11-23 21:10:16,347 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 176 transitions. Word has length 2
[2023-11-23 21:10:16,347 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-23 21:10:16,348 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 176 transitions.
[2023-11-23 21:10:16,348 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)
[2023-11-23 21:10:16,350 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 176 transitions.
[2023-11-23 21:10:16,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3
[2023-11-23 21:10:16,351 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-23 21:10:16,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1]
[2023-11-23 21:10:16,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-23 21:10:16,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-23 21:10:16,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 21:10:16,353 INFO L85 PathProgramCache]: Analyzing trace with hash 4758, now seen corresponding path program 1 times
[2023-11-23 21:10:16,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-23 21:10:16,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122290290]
[2023-11-23 21:10:16,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 21:10:16,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 21:10:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 21:10:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-23 21:10:16,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-23 21:10:16,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122290290]
[2023-11-23 21:10:16,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122290290] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 21:10:16,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 21:10:16,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-23 21:10:16,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972097250]
[2023-11-23 21:10:16,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 21:10:16,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-23 21:10:16,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-23 21:10:16,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-23 21:10:16,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-23 21:10:16,595 INFO L87 Difference]: Start difference. First operand 100 states and 176 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)
[2023-11-23 21:10:16,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-23 21:10:16,675 INFO L93 Difference]: Finished difference Result 99 states and 175 transitions.
[2023-11-23 21:10:16,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-23 21:10:16,676 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
[2023-11-23 21:10:16,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-23 21:10:16,678 INFO L225 Difference]: With dead ends: 99
[2023-11-23 21:10:16,678 INFO L226 Difference]: Without dead ends: 99
[2023-11-23 21:10:16,679 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
[2023-11-23 21:10:16,681 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 17 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-23 21:10:16,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 10 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-23 21:10:16,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2023-11-23 21:10:16,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99.
[2023-11-23 21:10:16,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 88 states have (on average 1.9886363636363635) internal successors, (175), 98 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:10:16,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 175 transitions.
[2023-11-23 21:10:16,699 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 175 transitions. Word has length 2
[2023-11-23 21:10:16,699 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-23 21:10:16,699 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 175 transitions.
[2023-11-23 21:10:16,700 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)
[2023-11-23 21:10:16,700 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 175 transitions.
[2023-11-23 21:10:16,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2023-11-23 21:10:16,701 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-23 21:10:16,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2023-11-23 21:10:16,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-23 21:10:16,702 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-23 21:10:16,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 21:10:16,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1152714151, now seen corresponding path program 1 times
[2023-11-23 21:10:16,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-23 21:10:16,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462868307]
[2023-11-23 21:10:16,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 21:10:16,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 21:10:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 21:10:16,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-23 21:10:16,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-23 21:10:16,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462868307]
[2023-11-23 21:10:16,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462868307] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 21:10:16,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 21:10:16,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-23 21:10:16,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846370381]
[2023-11-23 21:10:16,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 21:10:16,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-23 21:10:16,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-23 21:10:16,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-23 21:10:16,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-23 21:10:16,911 INFO L87 Difference]: Start difference. First operand 99 states and 175 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:10:17,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-23 21:10:17,020 INFO L93 Difference]: Finished difference Result 80 states and 139 transitions.
[2023-11-23 21:10:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-11-23 21:10:17,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7
[2023-11-23 21:10:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-23 21:10:17,023 INFO L225 Difference]: With dead ends: 80
[2023-11-23 21:10:17,023 INFO L226 Difference]: Without dead ends: 80
[2023-11-23 21:10:17,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-11-23 21:10:17,025 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 34 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-23 21:10:17,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 9 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-23 21:10:17,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2023-11-23 21:10:17,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80.
[2023-11-23 21:10:17,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.8533333333333333) internal successors, (139), 79 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:10:17,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 139 transitions.
[2023-11-23 21:10:17,041 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 139 transitions. Word has length 7
[2023-11-23 21:10:17,041 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-23 21:10:17,041 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 139 transitions.
[2023-11-23 21:10:17,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:10:17,042 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 139 transitions.
[2023-11-23 21:10:17,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2023-11-23 21:10:17,043 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-23 21:10:17,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2023-11-23 21:10:17,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-23 21:10:17,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-23 21:10:17,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 21:10:17,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1152714150, now seen corresponding path program 1 times
[2023-11-23 21:10:17,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-23 21:10:17,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498743736]
[2023-11-23 21:10:17,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 21:10:17,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 21:10:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 21:10:17,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-23 21:10:17,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-23 21:10:17,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498743736]
[2023-11-23 21:10:17,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498743736] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 21:10:17,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 21:10:17,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-23 21:10:17,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294737305]
[2023-11-23 21:10:17,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 21:10:17,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-23 21:10:17,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-23 21:10:17,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-23 21:10:17,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-23 21:10:17,299 INFO L87 Difference]: Start difference. First operand 80 states and 139 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:10:17,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-23 21:10:17,384 INFO L93 Difference]: Finished difference Result 63 states and 107 transitions.
[2023-11-23 21:10:17,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-11-23 21:10:17,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7
[2023-11-23 21:10:17,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-23 21:10:17,386 INFO L225 Difference]: With dead ends: 63
[2023-11-23 21:10:17,386 INFO L226 Difference]: Without dead ends: 59
[2023-11-23 21:10:17,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2023-11-23 21:10:17,388 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 39 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-23 21:10:17,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 11 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-23 21:10:17,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2023-11-23 21:10:17,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59.
[2023-11-23 21:10:17,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.7241379310344827) internal successors, (100), 58 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:10:17,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 100 transitions.
[2023-11-23 21:10:17,398 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 100 transitions. Word has length 7
[2023-11-23 21:10:17,398 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-23 21:10:17,398 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 100 transitions.
[2023-11-23 21:10:17,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:10:17,399 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 100 transitions.
[2023-11-23 21:10:17,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-11-23 21:10:17,400 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-23 21:10:17,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-23 21:10:17,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-23 21:10:17,401 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-23 21:10:17,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-23 21:10:17,401 INFO L85 PathProgramCache]: Analyzing trace with hash 2051301326, now seen corresponding path program 1 times
[2023-11-23 21:10:17,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-23 21:10:17,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780259023]
[2023-11-23 21:10:17,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-23 21:10:17,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-23 21:10:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-23 21:10:17,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-23 21:10:17,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-11-23 21:10:17,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780259023]
[2023-11-23 21:10:17,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780259023] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-23 21:10:17,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-23 21:10:17,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-23 21:10:17,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094759086]
[2023-11-23 21:10:17,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-23 21:10:17,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-23 21:10:17,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-11-23 21:10:17,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-23 21:10:17,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-23 21:10:17,547 INFO L87 Difference]: Start difference. First operand 59 states and 100 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:10:17,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-23 21:10:17,601 INFO L93 Difference]: Finished difference Result 52 states and 87 transitions.
[2023-11-23 21:10:17,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-23 21:10:17,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10
[2023-11-23 21:10:17,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-23 21:10:17,602 INFO L225 Difference]: With dead ends: 52
[2023-11-23 21:10:17,603 INFO L226 Difference]: Without dead ends: 0
[2023-11-23 21:10:17,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-23 21:10:17,610 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-23 21:10:17,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 10 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-23 21:10:17,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2023-11-23 21:10:17,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2023-11-23 21:10:17,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:10:17,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2023-11-23 21:10:17,613 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10
[2023-11-23 21:10:17,614 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-23 21:10:17,614 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2023-11-23 21:10:17,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-23 21:10:17,614 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2023-11-23 21:10:17,615 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2023-11-23 21:10:17,618 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining)
[2023-11-23 21:10:17,619 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining)
[2023-11-23 21:10:17,619 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining)
[2023-11-23 21:10:17,619 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining)
[2023-11-23 21:10:17,620 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining)
[2023-11-23 21:10:17,620 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining)
[2023-11-23 21:10:17,620 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining)
[2023-11-23 21:10:17,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining)
[2023-11-23 21:10:17,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 10 remaining)
[2023-11-23 21:10:17,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 10 remaining)
[2023-11-23 21:10:17,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-23 21:10:17,627 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1]
[2023-11-23 21:10:17,637 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2023-11-23 21:10:17,637 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2023-11-23 21:10:17,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:10:17 BasicIcfg
[2023-11-23 21:10:17,647 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-11-23 21:10:17,651 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2023-11-23 21:10:17,652 INFO L270 PluginConnector]: Initializing Witness Printer...
[2023-11-23 21:10:17,653 INFO L274 PluginConnector]: Witness Printer initialized
[2023-11-23 21:10:17,653 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:15" (3/4) ...
[2023-11-23 21:10:17,655 INFO L137 WitnessPrinter]: Generating witness for correct program
[2023-11-23 21:10:17,660 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun
[2023-11-23 21:10:17,667 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges
[2023-11-23 21:10:17,668 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges
[2023-11-23 21:10:17,668 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2023-11-23 21:10:17,673 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2023-11-23 21:10:17,790 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b1b905-b171-4384-84e1-ca340546d62c/bin/utaipan-verify-mE87zJ7Ire/witness.graphml
[2023-11-23 21:10:17,790 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b1b905-b171-4384-84e1-ca340546d62c/bin/utaipan-verify-mE87zJ7Ire/witness.yml
[2023-11-23 21:10:17,791 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-11-23 21:10:17,792 INFO L158 Benchmark]: Toolchain (without parser) took 3609.99ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 92.0MB in the beginning and 130.5MB in the end (delta: -38.5MB). Peak memory consumption was 1.5MB. Max. memory is 16.1GB.
[2023-11-23 21:10:17,792 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 138.4MB. Free memory is still 113.6MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-23 21:10:17,793 INFO L158 Benchmark]: CACSL2BoogieTranslator took 598.85ms. Allocated memory is still 138.4MB. Free memory was 92.0MB in the beginning and 106.6MB in the end (delta: -14.6MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB.
[2023-11-23 21:10:17,793 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.26ms. Allocated memory is still 138.4MB. Free memory was 106.6MB in the beginning and 104.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-23 21:10:17,794 INFO L158 Benchmark]: Boogie Preprocessor took 29.81ms. Allocated memory is still 138.4MB. Free memory was 104.8MB in the beginning and 103.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-23 21:10:17,794 INFO L158 Benchmark]: RCFGBuilder took 583.09ms. Allocated memory is still 138.4MB. Free memory was 103.3MB in the beginning and 84.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB.
[2023-11-23 21:10:17,794 INFO L158 Benchmark]: TraceAbstraction took 2172.25ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 83.4MB in the beginning and 134.7MB in the end (delta: -51.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-23 21:10:17,795 INFO L158 Benchmark]: Witness Printer took 140.89ms. Allocated memory is still 176.2MB. Free memory was 134.7MB in the beginning and 130.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2023-11-23 21:10:17,798 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.25ms. Allocated memory is still 138.4MB. Free memory is still 113.6MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 598.85ms. Allocated memory is still 138.4MB. Free memory was 92.0MB in the beginning and 106.6MB in the end (delta: -14.6MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 77.26ms. Allocated memory is still 138.4MB. Free memory was 106.6MB in the beginning and 104.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 29.81ms. Allocated memory is still 138.4MB. Free memory was 104.8MB in the beginning and 103.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 583.09ms. Allocated memory is still 138.4MB. Free memory was 103.3MB in the beginning and 84.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB.
* TraceAbstraction took 2172.25ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 83.4MB in the beginning and 134.7MB in the end (delta: -51.3MB). There was no memory consumed. Max. memory is 16.1GB.
* Witness Printer took 140.89ms. Allocated memory is still 176.2MB. Free memory was 134.7MB in the beginning and 130.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 688]: all allocated memory was freed
For all program executions holds that all allocated memory was freed at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: -1]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 3 procedures, 35 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 120 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 120 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 148 IncrementalHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 28 mSDtfsCounter, 148 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 178 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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
- AllSpecificationsHoldResult: All specifications hold
7 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2023-11-23 21:10:17,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b1b905-b171-4384-84e1-ca340546d62c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE