/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.5.ufo.UNBOUNDED.pals.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-01 00:13:29,642 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-01 00:13:29,644 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2023-04-01 00:13:29,674 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-01 00:13:29,676 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-01 00:13:29,678 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2023-04-01 00:13:29,685 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-01 00:13:29,687 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-01 00:13:29,687 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2023-04-01 00:13:29,692 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-01 00:13:29,692 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
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[2023-04-01 00:13:29,695 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2023-04-01 00:13:29,701 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-01 00:13:29,704 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-04-01 00:13:29,710 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-01 00:13:29,712 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 00:13:29,713 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 00:13:29,734 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 00:13:29,734 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 00:13:29,735 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 00:13:29,735 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 00:13:29,735 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 00:13:29,736 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 00:13:29,736 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-01 00:13:29,736 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-01 00:13:29,736 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-01 00:13:29,736 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-01 00:13:29,737 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-01 00:13:29,737 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-01 00:13:29,737 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-01 00:13:29,737 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-01 00:13:29,737 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-01 00:13:29,737 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-01 00:13:29,737 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-01 00:13:29,737 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-01 00:13:29,738 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 00:13:29,738 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 00:13:29,738 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 00:13:29,738 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 00:13:29,738 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 00:13:29,738 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 00:13:29,738 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 00:13:29,738 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 00:13:29,738 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 00:13:29,739 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 00:13:29,739 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 00:13:29,739 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 00:13:29,739 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 00:13:29,739 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 00:13:29,739 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 00:13:29,739 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 00:13:29,739 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-01 00:13:29,739 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 00:13:29,739 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 00:13:29,739 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-01 00:13:29,740 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 00:13:29,740 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 00:13:29,740 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-01 00:13:29,740 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain
[2023-04-01 00:13:29,912 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 00:13:29,928 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 00:13:29,930 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 00:13:29,931 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 00:13:29,931 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 00:13:29,932 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c
[2023-04-01 00:13:30,893 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 00:13:31,065 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 00:13:31,065 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c
[2023-04-01 00:13:31,071 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53e8537d3/8c5f3c7e347944abaafa9f45dc713ec9/FLAG7427ae06a
[2023-04-01 00:13:31,080 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53e8537d3/8c5f3c7e347944abaafa9f45dc713ec9
[2023-04-01 00:13:31,082 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 00:13:31,083 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 00:13:31,083 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 00:13:31,083 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 00:13:31,087 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 00:13:31,087 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:13:31" (1/1) ...
[2023-04-01 00:13:31,088 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240c4402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:31, skipping insertion in model container
[2023-04-01 00:13:31,088 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:13:31" (1/1) ...
[2023-04-01 00:13:31,092 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 00:13:31,116 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 00:13:31,241 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.5.ufo.UNBOUNDED.pals.c[12779,12792]
[2023-04-01 00:13:31,243 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 00:13:31,250 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 00:13:31,284 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.5.ufo.UNBOUNDED.pals.c[12779,12792]
[2023-04-01 00:13:31,285 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 00:13:31,305 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 00:13:31,306 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:31 WrapperNode
[2023-04-01 00:13:31,306 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 00:13:31,307 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 00:13:31,307 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 00:13:31,307 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 00:13:31,336 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:31" (1/1) ...
[2023-04-01 00:13:31,336 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:31" (1/1) ...
[2023-04-01 00:13:31,343 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:31" (1/1) ...
[2023-04-01 00:13:31,343 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:31" (1/1) ...
[2023-04-01 00:13:31,354 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:31" (1/1) ...
[2023-04-01 00:13:31,359 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:31" (1/1) ...
[2023-04-01 00:13:31,361 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:31" (1/1) ...
[2023-04-01 00:13:31,362 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:31" (1/1) ...
[2023-04-01 00:13:31,364 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 00:13:31,365 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 00:13:31,365 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 00:13:31,365 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 00:13:31,365 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:31" (1/1) ...
[2023-04-01 00:13:31,370 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 00:13:31,378 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 00:13:31,386 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 00:13:31,397 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 00:13:31,417 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 00:13:31,417 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 00:13:31,417 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 00:13:31,417 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-04-01 00:13:31,417 INFO  L138     BoogieDeclarations]: Found implementation of procedure node1
[2023-04-01 00:13:31,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure node2
[2023-04-01 00:13:31,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure node3
[2023-04-01 00:13:31,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure node4
[2023-04-01 00:13:31,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure node5
[2023-04-01 00:13:31,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2023-04-01 00:13:31,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2023-04-01 00:13:31,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 00:13:31,418 INFO  L138     BoogieDeclarations]: Found implementation of procedure assert
[2023-04-01 00:13:31,418 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 00:13:31,418 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 00:13:31,418 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 00:13:31,418 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 00:13:31,419 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2023-04-01 00:13:31,419 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2023-04-01 00:13:31,419 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2023-04-01 00:13:31,419 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2023-04-01 00:13:31,419 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-04-01 00:13:31,419 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2023-04-01 00:13:31,419 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2023-04-01 00:13:31,419 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2023-04-01 00:13:31,419 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2023-04-01 00:13:31,419 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2023-04-01 00:13:31,419 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2023-04-01 00:13:31,419 INFO  L130     BoogieDeclarations]: Found specification of procedure node5
[2023-04-01 00:13:31,419 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2023-04-01 00:13:31,420 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2023-04-01 00:13:31,420 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 00:13:31,420 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 00:13:31,420 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 00:13:31,420 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 00:13:31,420 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 00:13:31,420 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 00:13:31,420 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 00:13:31,487 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 00:13:31,488 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 00:13:31,817 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 00:13:32,194 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 00:13:32,194 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 00:13:32,196 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:13:32 BoogieIcfgContainer
[2023-04-01 00:13:32,196 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 00:13:32,198 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 00:13:32,198 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 00:13:32,200 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 00:13:32,201 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:13:31" (1/3) ...
[2023-04-01 00:13:32,201 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e357f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:13:32, skipping insertion in model container
[2023-04-01 00:13:32,201 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:31" (2/3) ...
[2023-04-01 00:13:32,201 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e357f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:13:32, skipping insertion in model container
[2023-04-01 00:13:32,201 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:13:32" (3/3) ...
[2023-04-01 00:13:32,202 INFO  L112   eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c
[2023-04-01 00:13:32,213 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 00:13:32,214 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 00:13:32,250 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 00:13:32,254 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;@22677202, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-01 00:13:32,255 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 00:13:32,259 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 44 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2023-04-01 00:13:32,264 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2023-04-01 00:13:32,264 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 00:13:32,265 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]
[2023-04-01 00:13:32,265 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 00:13:32,269 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 00:13:32,269 INFO  L85        PathProgramCache]: Analyzing trace with hash 599623193, now seen corresponding path program 1 times
[2023-04-01 00:13:32,275 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 00:13:32,275 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825870907]
[2023-04-01 00:13:32,275 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:13:32,276 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 00:13:32,676 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:13:35,777 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 00:13:35,777 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 00:13:35,777 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825870907]
[2023-04-01 00:13:35,778 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825870907] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 00:13:35,778 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 00:13:35,778 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29
[2023-04-01 00:13:35,779 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894409205]
[2023-04-01 00:13:35,779 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 00:13:35,782 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2023-04-01 00:13:35,782 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 00:13:35,811 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2023-04-01 00:13:35,812 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812
[2023-04-01 00:13:35,813 INFO  L87              Difference]: Start difference. First operand  has 44 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand  has 29 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 10 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2023-04-01 00:13:37,196 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 00:13:37,196 INFO  L93              Difference]: Finished difference Result 108 states and 122 transitions.
[2023-04-01 00:13:37,197 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. 
[2023-04-01 00:13:37,198 INFO  L78                 Accepts]: Start accepts. Automaton has  has 29 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 10 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 38
[2023-04-01 00:13:37,199 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 00:13:37,204 INFO  L225             Difference]: With dead ends: 108
[2023-04-01 00:13:37,204 INFO  L226             Difference]: Without dead ends: 77
[2023-04-01 00:13:37,209 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=531, Invalid=2775, Unknown=0, NotChecked=0, Total=3306
[2023-04-01 00:13:37,211 INFO  L413           NwaCegarLoop]: 23 mSDtfsCounter, 244 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-04-01 00:13:37,212 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 191 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-04-01 00:13:37,223 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2023-04-01 00:13:37,269 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67.
[2023-04-01 00:13:37,270 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 67 states, 31 states have (on average 1.032258064516129) internal successors, (32), 32 states have internal predecessors, (32), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17)
[2023-04-01 00:13:37,271 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions.
[2023-04-01 00:13:37,272 INFO  L78                 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 38
[2023-04-01 00:13:37,272 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 00:13:37,272 INFO  L495      AbstractCegarLoop]: Abstraction has 67 states and 67 transitions.
[2023-04-01 00:13:37,273 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 29 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 10 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2023-04-01 00:13:37,273 INFO  L276                IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions.
[2023-04-01 00:13:37,274 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2023-04-01 00:13:37,274 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 00:13:37,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 00:13:37,274 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 00:13:37,275 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 00:13:37,275 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 00:13:37,275 INFO  L85        PathProgramCache]: Analyzing trace with hash -1359144806, now seen corresponding path program 1 times
[2023-04-01 00:13:37,275 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 00:13:37,275 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167209343]
[2023-04-01 00:13:37,275 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:13:37,276 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 00:13:37,490 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:13:49,372 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-04-01 00:13:49,373 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 00:13:49,373 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167209343]
[2023-04-01 00:13:49,373 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167209343] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 00:13:49,373 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591859483]
[2023-04-01 00:13:49,373 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:13:49,373 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 00:13:49,374 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 00:13:49,379 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 00:13:49,384 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 00:13:49,645 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:13:49,673 INFO  L262         TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 208 conjunts are in the unsatisfiable core
[2023-04-01 00:13:49,685 INFO  L285         TraceCheckSpWp]: Computing forward predicates...