/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-var-start-time.3.ufo.UNBOUNDED.pals.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-01 00:12:30,150 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-01 00:12:30,152 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2023-04-01 00:12:30,219 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
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[2023-04-01 00:12:30,225 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2023-04-01 00:12:30,250 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
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[2023-04-01 00:12:30,257 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
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[2023-04-01 00:12:30,260 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2023-04-01 00:12:30,290 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-04-01 00:12:30,297 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-01 00:12:30,299 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 00:12:30,300 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 00:12:30,344 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 00:12:30,345 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 00:12:30,345 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 00:12:30,345 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 00:12:30,346 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 00:12:30,346 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 00:12:30,346 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-01 00:12:30,346 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-01 00:12:30,347 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-01 00:12:30,347 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-01 00:12:30,347 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-01 00:12:30,347 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-01 00:12:30,348 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-01 00:12:30,348 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-01 00:12:30,348 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-01 00:12:30,348 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-01 00:12:30,348 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-01 00:12:30,348 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-01 00:12:30,361 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 00:12:30,361 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 00:12:30,361 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 00:12:30,361 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 00:12:30,361 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 00:12:30,361 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 00:12:30,362 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 00:12:30,362 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 00:12:30,362 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 00:12:30,362 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 00:12:30,362 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 00:12:30,362 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 00:12:30,362 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 00:12:30,363 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 00:12:30,363 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 00:12:30,363 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 00:12:30,363 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-01 00:12:30,363 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 00:12:30,363 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 00:12:30,363 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-01 00:12:30,363 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 00:12:30,364 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 00:12:30,364 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-01 00:12:30,364 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain
[2023-04-01 00:12:30,809 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 00:12:30,835 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 00:12:30,837 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 00:12:30,854 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 00:12:30,855 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 00:12:30,856 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c
[2023-04-01 00:12:32,876 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 00:12:33,288 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 00:12:33,289 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c
[2023-04-01 00:12:33,299 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3457778c9/93e36ff238364b90923f1f984e72a0c2/FLAG94665d2c1
[2023-04-01 00:12:33,327 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3457778c9/93e36ff238364b90923f1f984e72a0c2
[2023-04-01 00:12:33,329 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 00:12:33,330 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 00:12:33,332 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 00:12:33,332 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 00:12:33,335 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 00:12:33,336 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:12:33" (1/1) ...
[2023-04-01 00:12:33,337 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@181412a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:33, skipping insertion in model container
[2023-04-01 00:12:33,337 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:12:33" (1/1) ...
[2023-04-01 00:12:33,343 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 00:12:33,361 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 00:12:33,540 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-var-start-time.3.ufo.UNBOUNDED.pals.c[6899,6912]
[2023-04-01 00:12:33,549 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 00:12:33,567 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 00:12:33,623 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-var-start-time.3.ufo.UNBOUNDED.pals.c[6899,6912]
[2023-04-01 00:12:33,624 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 00:12:33,647 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 00:12:33,648 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:33 WrapperNode
[2023-04-01 00:12:33,648 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 00:12:33,649 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 00:12:33,650 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 00:12:33,650 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 00:12:33,661 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:33" (1/1) ...
[2023-04-01 00:12:33,661 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:33" (1/1) ...
[2023-04-01 00:12:33,673 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:33" (1/1) ...
[2023-04-01 00:12:33,674 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:33" (1/1) ...
[2023-04-01 00:12:33,681 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:33" (1/1) ...
[2023-04-01 00:12:33,687 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:33" (1/1) ...
[2023-04-01 00:12:33,689 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:33" (1/1) ...
[2023-04-01 00:12:33,690 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:33" (1/1) ...
[2023-04-01 00:12:33,693 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 00:12:33,693 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 00:12:33,694 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 00:12:33,694 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 00:12:33,694 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:33" (1/1) ...
[2023-04-01 00:12:33,700 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 00:12:33,711 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 00:12:33,737 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 00:12:33,757 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 00:12:33,770 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 00:12:33,770 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 00:12:33,770 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 00:12:33,770 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-04-01 00:12:33,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure node1
[2023-04-01 00:12:33,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure node2
[2023-04-01 00:12:33,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure node3
[2023-04-01 00:12:33,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2023-04-01 00:12:33,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2023-04-01 00:12:33,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 00:12:33,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure assert
[2023-04-01 00:12:33,771 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 00:12:33,772 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 00:12:33,772 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 00:12:33,772 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 00:12:33,772 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2023-04-01 00:12:33,772 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2023-04-01 00:12:33,772 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2023-04-01 00:12:33,772 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2023-04-01 00:12:33,773 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-04-01 00:12:33,773 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2023-04-01 00:12:33,773 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2023-04-01 00:12:33,773 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2023-04-01 00:12:33,773 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2023-04-01 00:12:33,773 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2023-04-01 00:12:33,773 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2023-04-01 00:12:33,773 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2023-04-01 00:12:33,773 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 00:12:33,773 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 00:12:33,774 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 00:12:33,774 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 00:12:33,774 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 00:12:33,774 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 00:12:33,774 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 00:12:33,849 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 00:12:33,851 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 00:12:34,150 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 00:12:34,429 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 00:12:34,429 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 00:12:34,431 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:12:34 BoogieIcfgContainer
[2023-04-01 00:12:34,431 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 00:12:34,434 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 00:12:34,434 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 00:12:34,436 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 00:12:34,436 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:12:33" (1/3) ...
[2023-04-01 00:12:34,437 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1ab574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:12:34, skipping insertion in model container
[2023-04-01 00:12:34,437 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:12:33" (2/3) ...
[2023-04-01 00:12:34,437 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1ab574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:12:34, skipping insertion in model container
[2023-04-01 00:12:34,437 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:12:34" (3/3) ...
[2023-04-01 00:12:34,438 INFO  L112   eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c
[2023-04-01 00:12:34,451 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 00:12:34,451 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 00:12:34,495 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 00:12:34,500 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;@7bd4d589, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-01 00:12:34,501 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 00:12:34,504 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 38 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2023-04-01 00:12:34,511 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2023-04-01 00:12:34,511 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 00:12:34,512 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]
[2023-04-01 00:12:34,517 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 00:12:34,523 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 00:12:34,523 INFO  L85        PathProgramCache]: Analyzing trace with hash 1651210126, now seen corresponding path program 1 times
[2023-04-01 00:12:34,529 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 00:12:34,529 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650327121]
[2023-04-01 00:12:34,529 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:12:34,530 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 00:12:34,834 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:12:37,070 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 00:12:37,071 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 00:12:37,071 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650327121]
[2023-04-01 00:12:37,072 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650327121] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 00:12:37,072 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 00:12:37,073 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22
[2023-04-01 00:12:37,074 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588816257]
[2023-04-01 00:12:37,075 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 00:12:37,079 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2023-04-01 00:12:37,079 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 00:12:37,104 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2023-04-01 00:12:37,106 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462
[2023-04-01 00:12:37,108 INFO  L87              Difference]: Start difference. First operand  has 38 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand  has 22 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 7 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7)
[2023-04-01 00:12:38,214 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 00:12:38,215 INFO  L93              Difference]: Finished difference Result 88 states and 100 transitions.
[2023-04-01 00:12:38,216 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. 
[2023-04-01 00:12:38,218 INFO  L78                 Accepts]: Start accepts. Automaton has  has 22 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 7 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 32
[2023-04-01 00:12:38,219 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 00:12:38,225 INFO  L225             Difference]: With dead ends: 88
[2023-04-01 00:12:38,226 INFO  L226             Difference]: Without dead ends: 63
[2023-04-01 00:12:38,229 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=289, Invalid=1433, Unknown=0, NotChecked=0, Total=1722
[2023-04-01 00:12:38,232 INFO  L413           NwaCegarLoop]: 25 mSDtfsCounter, 119 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-04-01 00:12:38,233 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 197 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-04-01 00:12:38,249 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2023-04-01 00:12:38,311 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 55.
[2023-04-01 00:12:38,312 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 55 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13)
[2023-04-01 00:12:38,314 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions.
[2023-04-01 00:12:38,316 INFO  L78                 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 32
[2023-04-01 00:12:38,316 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 00:12:38,332 INFO  L495      AbstractCegarLoop]: Abstraction has 55 states and 55 transitions.
[2023-04-01 00:12:38,334 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 22 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 7 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7)
[2023-04-01 00:12:38,334 INFO  L276                IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions.
[2023-04-01 00:12:38,336 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2023-04-01 00:12:38,337 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 00:12:38,337 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-01 00:12:38,337 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 00:12:38,338 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 00:12:38,338 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 00:12:38,338 INFO  L85        PathProgramCache]: Analyzing trace with hash 481137603, now seen corresponding path program 1 times
[2023-04-01 00:12:38,339 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 00:12:38,339 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685632856]
[2023-04-01 00:12:38,339 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:12:38,339 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 00:12:38,511 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:12:47,311 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-04-01 00:12:47,312 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 00:12:47,312 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685632856]
[2023-04-01 00:12:47,312 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685632856] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 00:12:47,312 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956493914]
[2023-04-01 00:12:47,313 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:12:47,313 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 00:12:47,313 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 00:12:47,341 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 00:12:47,381 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 00:12:47,633 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:12:47,657 INFO  L262         TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 160 conjunts are in the unsatisfiable core
[2023-04-01 00:12:47,669 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 00:13:13,762 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 00:13:13,763 INFO  L327         TraceCheckSpWp]: Computing backward predicates...