/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.UNBOUNDED.pals.c


--------------------------------------------------------------------------------


This is Ultimate 0.2.3-dev-f954360
[2023-04-01 00:15:10,170 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2023-04-01 00:15:10,202 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2023-04-01 00:15:10,206 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
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[2023-04-01 00:15:10,209 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
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[2023-04-01 00:15:10,219 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-04-01 00:15:10,223 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-01 00:15:10,224 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 00:15:10,225 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf
[2023-04-01 00:15:10,241 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 00:15:10,241 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 00:15:10,241 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 00:15:10,241 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 00:15:10,242 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 00:15:10,242 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 00:15:10,242 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-01 00:15:10,242 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-01 00:15:10,243 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-01 00:15:10,243 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-01 00:15:10,243 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-01 00:15:10,243 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-01 00:15:10,243 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-01 00:15:10,243 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-01 00:15:10,243 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-01 00:15:10,243 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-01 00:15:10,244 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-01 00:15:10,244 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-01 00:15:10,244 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 00:15:10,244 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 00:15:10,244 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 00:15:10,244 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 00:15:10,245 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 00:15:10,245 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 00:15:10,245 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 00:15:10,245 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 00:15:10,245 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 00:15:10,245 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 00:15:10,245 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 00:15:10,245 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 00:15:10,245 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 00:15:10,246 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 00:15:10,246 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 00:15:10,246 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 00:15:10,246 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-01 00:15:10,246 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 00:15:10,246 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 00:15:10,246 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-01 00:15:10,246 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 00:15:10,246 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 00:15:10,247 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-01 00:15:10,247 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain
[2023-04-01 00:15:10,421 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 00:15:10,441 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 00:15:10,443 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 00:15:10,444 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 00:15:10,445 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 00:15:10,445 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.UNBOUNDED.pals.c
[2023-04-01 00:15:11,509 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 00:15:11,699 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 00:15:11,700 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.UNBOUNDED.pals.c
[2023-04-01 00:15:11,709 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce296d29b/c31322ca712c49159b41f1427d3dc71c/FLAGcd173c4fd
[2023-04-01 00:15:11,718 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce296d29b/c31322ca712c49159b41f1427d3dc71c
[2023-04-01 00:15:11,720 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 00:15:11,721 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 00:15:11,722 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 00:15:11,722 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 00:15:11,724 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 00:15:11,724 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:15:11" (1/1) ...
[2023-04-01 00:15:11,725 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@144877bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:11, skipping insertion in model container
[2023-04-01 00:15:11,725 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:15:11" (1/1) ...
[2023-04-01 00:15:11,731 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 00:15:11,759 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 00:15:11,887 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.UNBOUNDED.pals.c[15103,15116]
[2023-04-01 00:15:11,890 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 00:15:11,904 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 00:15:11,956 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.UNBOUNDED.pals.c[15103,15116]
[2023-04-01 00:15:11,960 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 00:15:11,970 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 00:15:11,970 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:11 WrapperNode
[2023-04-01 00:15:11,971 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 00:15:11,971 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 00:15:11,971 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 00:15:11,972 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 00:15:11,979 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:11" (1/1) ...
[2023-04-01 00:15:11,979 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:11" (1/1) ...
[2023-04-01 00:15:12,006 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:11" (1/1) ...
[2023-04-01 00:15:12,006 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:11" (1/1) ...
[2023-04-01 00:15:12,014 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:11" (1/1) ...
[2023-04-01 00:15:12,020 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:11" (1/1) ...
[2023-04-01 00:15:12,022 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:11" (1/1) ...
[2023-04-01 00:15:12,023 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:11" (1/1) ...
[2023-04-01 00:15:12,025 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 00:15:12,026 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 00:15:12,026 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 00:15:12,026 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 00:15:12,026 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:11" (1/1) ...
[2023-04-01 00:15:12,042 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 00:15:12,050 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 00:15:12,059 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-04-01 00:15:12,061 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-04-01 00:15:12,084 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 00:15:12,084 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 00:15:12,085 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 00:15:12,086 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-04-01 00:15:12,086 INFO  L138     BoogieDeclarations]: Found implementation of procedure node1
[2023-04-01 00:15:12,086 INFO  L138     BoogieDeclarations]: Found implementation of procedure node2
[2023-04-01 00:15:12,086 INFO  L138     BoogieDeclarations]: Found implementation of procedure node3
[2023-04-01 00:15:12,086 INFO  L138     BoogieDeclarations]: Found implementation of procedure node4
[2023-04-01 00:15:12,086 INFO  L138     BoogieDeclarations]: Found implementation of procedure node5
[2023-04-01 00:15:12,086 INFO  L138     BoogieDeclarations]: Found implementation of procedure node6
[2023-04-01 00:15:12,086 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2023-04-01 00:15:12,086 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2023-04-01 00:15:12,086 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 00:15:12,086 INFO  L138     BoogieDeclarations]: Found implementation of procedure assert
[2023-04-01 00:15:12,086 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 00:15:12,086 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 00:15:12,087 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 00:15:12,087 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 00:15:12,087 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2023-04-01 00:15:12,087 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2023-04-01 00:15:12,087 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2023-04-01 00:15:12,087 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2023-04-01 00:15:12,087 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-04-01 00:15:12,087 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2023-04-01 00:15:12,087 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2023-04-01 00:15:12,088 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2023-04-01 00:15:12,088 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2023-04-01 00:15:12,088 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2023-04-01 00:15:12,088 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2023-04-01 00:15:12,088 INFO  L130     BoogieDeclarations]: Found specification of procedure node5
[2023-04-01 00:15:12,088 INFO  L130     BoogieDeclarations]: Found specification of procedure node6
[2023-04-01 00:15:12,088 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2023-04-01 00:15:12,088 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2023-04-01 00:15:12,088 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 00:15:12,088 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 00:15:12,088 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 00:15:12,088 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 00:15:12,088 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 00:15:12,088 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 00:15:12,088 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 00:15:12,162 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 00:15:12,177 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 00:15:12,506 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 00:15:12,861 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 00:15:12,862 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 00:15:12,865 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:15:12 BoogieIcfgContainer
[2023-04-01 00:15:12,865 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 00:15:12,867 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 00:15:12,867 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 00:15:12,869 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 00:15:12,869 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:15:11" (1/3) ...
[2023-04-01 00:15:12,870 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61aec8ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:15:12, skipping insertion in model container
[2023-04-01 00:15:12,870 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:15:11" (2/3) ...
[2023-04-01 00:15:12,870 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61aec8ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:15:12, skipping insertion in model container
[2023-04-01 00:15:12,871 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:15:12" (3/3) ...
[2023-04-01 00:15:12,873 INFO  L112   eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c
[2023-04-01 00:15:12,885 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 00:15:12,885 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 00:15:12,929 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 00:15:12,935 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@58eac9b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-01 00:15:12,935 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 00:15:12,939 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 52 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 28 states have internal predecessors, (32), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-04-01 00:15:12,945 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2023-04-01 00:15:12,945 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 00:15:12,946 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 00:15:12,947 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 00:15:12,952 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 00:15:12,952 INFO  L85        PathProgramCache]: Analyzing trace with hash -1670604334, now seen corresponding path program 1 times
[2023-04-01 00:15:12,958 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 00:15:12,959 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310081286]
[2023-04-01 00:15:12,959 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:15:12,959 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 00:15:13,289 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:15:16,681 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 00:15:16,682 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 00:15:16,682 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310081286]
[2023-04-01 00:15:16,683 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310081286] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 00:15:16,683 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 00:15:16,683 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28
[2023-04-01 00:15:16,684 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580917193]
[2023-04-01 00:15:16,684 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 00:15:16,687 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2023-04-01 00:15:16,687 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 00:15:16,705 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2023-04-01 00:15:16,706 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756
[2023-04-01 00:15:16,708 INFO  L87              Difference]: Start difference. First operand  has 52 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 28 states have internal predecessors, (32), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand  has 28 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2023-04-01 00:15:18,039 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 00:15:18,039 INFO  L93              Difference]: Finished difference Result 140 states and 163 transitions.
[2023-04-01 00:15:18,040 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2023-04-01 00:15:18,041 INFO  L78                 Accepts]: Start accepts. Automaton has  has 28 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 43
[2023-04-01 00:15:18,042 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 00:15:18,047 INFO  L225             Difference]: With dead ends: 140
[2023-04-01 00:15:18,047 INFO  L226             Difference]: Without dead ends: 101
[2023-04-01 00:15:18,049 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=436, Invalid=1916, Unknown=0, NotChecked=0, Total=2352
[2023-04-01 00:15:18,051 INFO  L413           NwaCegarLoop]: 22 mSDtfsCounter, 510 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-04-01 00:15:18,052 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 128 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-04-01 00:15:18,063 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2023-04-01 00:15:18,086 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 77.
[2023-04-01 00:15:18,087 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 77 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 40 states have internal predecessors, (45), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18)
[2023-04-01 00:15:18,088 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions.
[2023-04-01 00:15:18,089 INFO  L78                 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 43
[2023-04-01 00:15:18,089 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 00:15:18,089 INFO  L495      AbstractCegarLoop]: Abstraction has 77 states and 82 transitions.
[2023-04-01 00:15:18,089 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 28 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2023-04-01 00:15:18,089 INFO  L276                IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions.
[2023-04-01 00:15:18,090 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2023-04-01 00:15:18,090 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 00:15:18,090 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 00:15:18,091 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 00:15:18,091 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 00:15:18,091 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 00:15:18,091 INFO  L85        PathProgramCache]: Analyzing trace with hash -324569160, now seen corresponding path program 1 times
[2023-04-01 00:15:18,091 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 00:15:18,091 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163188328]
[2023-04-01 00:15:18,092 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:15:18,092 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 00:15:18,188 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:15:18,603 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 00:15:18,603 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 00:15:18,603 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163188328]
[2023-04-01 00:15:18,603 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163188328] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 00:15:18,604 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 00:15:18,604 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2023-04-01 00:15:18,604 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216326508]
[2023-04-01 00:15:18,604 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 00:15:18,605 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-04-01 00:15:18,605 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 00:15:18,606 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-04-01 00:15:18,606 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-04-01 00:15:18,606 INFO  L87              Difference]: Start difference. First operand 77 states and 82 transitions. Second operand  has 11 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10)
[2023-04-01 00:15:18,965 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 00:15:18,965 INFO  L93              Difference]: Finished difference Result 162 states and 175 transitions.
[2023-04-01 00:15:18,966 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2023-04-01 00:15:18,966 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 45
[2023-04-01 00:15:18,967 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 00:15:18,968 INFO  L225             Difference]: With dead ends: 162
[2023-04-01 00:15:18,968 INFO  L226             Difference]: Without dead ends: 123
[2023-04-01 00:15:18,969 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272
[2023-04-01 00:15:18,969 INFO  L413           NwaCegarLoop]: 32 mSDtfsCounter, 95 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-04-01 00:15:18,970 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 114 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-04-01 00:15:18,970 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2023-04-01 00:15:18,990 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 110.
[2023-04-01 00:15:18,991 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 110 states, 56 states have (on average 1.125) internal successors, (63), 57 states have internal predecessors, (63), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (27), 25 states have call predecessors, (27), 26 states have call successors, (27)
[2023-04-01 00:15:18,992 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 117 transitions.
[2023-04-01 00:15:18,992 INFO  L78                 Accepts]: Start accepts. Automaton has 110 states and 117 transitions. Word has length 45
[2023-04-01 00:15:18,992 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 00:15:18,992 INFO  L495      AbstractCegarLoop]: Abstraction has 110 states and 117 transitions.
[2023-04-01 00:15:18,992 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10)
[2023-04-01 00:15:18,992 INFO  L276                IsEmpty]: Start isEmpty. Operand 110 states and 117 transitions.
[2023-04-01 00:15:18,993 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2023-04-01 00:15:18,993 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 00:15:18,993 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 00:15:18,993 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-01 00:15:18,993 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 00:15:18,994 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 00:15:18,994 INFO  L85        PathProgramCache]: Analyzing trace with hash 872642234, now seen corresponding path program 1 times
[2023-04-01 00:15:18,994 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 00:15:18,994 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620123715]
[2023-04-01 00:15:18,994 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:15:18,994 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 00:15:19,027 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:15:21,215 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 00:15:21,215 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 00:15:21,215 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620123715]
[2023-04-01 00:15:21,215 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620123715] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 00:15:21,217 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 00:15:21,217 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28
[2023-04-01 00:15:21,217 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338477462]
[2023-04-01 00:15:21,217 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 00:15:21,217 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2023-04-01 00:15:21,217 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 00:15:21,218 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2023-04-01 00:15:21,220 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756
[2023-04-01 00:15:21,220 INFO  L87              Difference]: Start difference. First operand 110 states and 117 transitions. Second operand  has 28 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2023-04-01 00:15:22,648 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 00:15:22,649 INFO  L93              Difference]: Finished difference Result 218 states and 234 transitions.
[2023-04-01 00:15:22,649 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. 
[2023-04-01 00:15:22,649 INFO  L78                 Accepts]: Start accepts. Automaton has  has 28 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 45
[2023-04-01 00:15:22,650 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 00:15:22,653 INFO  L225             Difference]: With dead ends: 218
[2023-04-01 00:15:22,653 INFO  L226             Difference]: Without dead ends: 147
[2023-04-01 00:15:22,661 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=552, Invalid=2204, Unknown=0, NotChecked=0, Total=2756
[2023-04-01 00:15:22,663 INFO  L413           NwaCegarLoop]: 22 mSDtfsCounter, 455 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-04-01 00:15:22,664 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 133 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-04-01 00:15:22,666 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 147 states.
[2023-04-01 00:15:22,696 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 112.
[2023-04-01 00:15:22,697 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 112 states, 57 states have (on average 1.105263157894737) internal successors, (63), 59 states have internal predecessors, (63), 27 states have call successors, (27), 27 states have call predecessors, (27), 27 states have return successors, (28), 25 states have call predecessors, (28), 26 states have call successors, (28)
[2023-04-01 00:15:22,698 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 118 transitions.
[2023-04-01 00:15:22,698 INFO  L78                 Accepts]: Start accepts. Automaton has 112 states and 118 transitions. Word has length 45
[2023-04-01 00:15:22,698 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 00:15:22,698 INFO  L495      AbstractCegarLoop]: Abstraction has 112 states and 118 transitions.
[2023-04-01 00:15:22,698 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 28 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2023-04-01 00:15:22,698 INFO  L276                IsEmpty]: Start isEmpty. Operand 112 states and 118 transitions.
[2023-04-01 00:15:22,699 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2023-04-01 00:15:22,699 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 00:15:22,699 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 00:15:22,699 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-04-01 00:15:22,699 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 00:15:22,699 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 00:15:22,700 INFO  L85        PathProgramCache]: Analyzing trace with hash -411395812, now seen corresponding path program 1 times
[2023-04-01 00:15:22,700 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 00:15:22,700 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756770740]
[2023-04-01 00:15:22,700 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:15:22,700 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 00:15:22,733 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:15:23,657 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 00:15:23,657 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 00:15:23,657 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756770740]
[2023-04-01 00:15:23,657 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756770740] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 00:15:23,658 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 00:15:23,658 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2023-04-01 00:15:23,658 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802234240]
[2023-04-01 00:15:23,659 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 00:15:23,659 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-04-01 00:15:23,659 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 00:15:23,660 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-04-01 00:15:23,660 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156
[2023-04-01 00:15:23,660 INFO  L87              Difference]: Start difference. First operand 112 states and 118 transitions. Second operand  has 13 states, 8 states have (on average 3.0) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10)
[2023-04-01 00:15:23,945 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 00:15:23,945 INFO  L93              Difference]: Finished difference Result 148 states and 165 transitions.
[2023-04-01 00:15:23,947 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2023-04-01 00:15:23,947 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 8 states have (on average 3.0) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 46
[2023-04-01 00:15:23,947 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 00:15:23,948 INFO  L225             Difference]: With dead ends: 148
[2023-04-01 00:15:23,948 INFO  L226             Difference]: Without dead ends: 146
[2023-04-01 00:15:23,949 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462
[2023-04-01 00:15:23,949 INFO  L413           NwaCegarLoop]: 57 mSDtfsCounter, 35 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-04-01 00:15:23,950 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 607 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-04-01 00:15:23,950 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 146 states.
[2023-04-01 00:15:23,991 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120.
[2023-04-01 00:15:23,991 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 120 states, 62 states have (on average 1.096774193548387) internal successors, (68), 65 states have internal predecessors, (68), 28 states have call successors, (28), 28 states have call predecessors, (28), 29 states have return successors, (30), 26 states have call predecessors, (30), 27 states have call successors, (30)
[2023-04-01 00:15:24,005 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 126 transitions.
[2023-04-01 00:15:24,005 INFO  L78                 Accepts]: Start accepts. Automaton has 120 states and 126 transitions. Word has length 46
[2023-04-01 00:15:24,005 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 00:15:24,005 INFO  L495      AbstractCegarLoop]: Abstraction has 120 states and 126 transitions.
[2023-04-01 00:15:24,006 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 8 states have (on average 3.0) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10)
[2023-04-01 00:15:24,006 INFO  L276                IsEmpty]: Start isEmpty. Operand 120 states and 126 transitions.
[2023-04-01 00:15:24,007 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2023-04-01 00:15:24,007 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 00:15:24,007 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 00:15:24,007 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-04-01 00:15:24,008 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 00:15:24,008 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 00:15:24,008 INFO  L85        PathProgramCache]: Analyzing trace with hash -1508418533, now seen corresponding path program 1 times
[2023-04-01 00:15:24,008 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 00:15:24,008 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48372045]
[2023-04-01 00:15:24,008 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:15:24,008 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 00:15:24,181 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:15:35,949 INFO  L134       CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-04-01 00:15:35,949 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 00:15:35,949 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48372045]
[2023-04-01 00:15:35,949 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48372045] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 00:15:35,949 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007746299]
[2023-04-01 00:15:35,949 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:15:35,950 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 00:15:35,950 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 00:15:35,952 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-04-01 00:15:35,953 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-04-01 00:15:36,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:15:36,250 INFO  L262         TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 197 conjunts are in the unsatisfiable core
[2023-04-01 00:15:36,271 INFO  L285         TraceCheckSpWp]: Computing forward predicates...