/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 OctagonDomain -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 06:17:20,839 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-01 06:17:20,841 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2023-04-01 06:17:20,880 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-01 06:17:20,883 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-01 06:17:20,886 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-01 06:17:20,888 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-04-01 06:17:20,889 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-04-01 06:17:20,894 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-01 06:17:20,895 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-01 06:17:20,896 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-01 06:17:20,897 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2023-04-01 06:17:20,901 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-01 06:17:20,902 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-01 06:17:20,902 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-01 06:17:20,904 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-01 06:17:20,909 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-01 06:17:20,910 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-01 06:17:20,911 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-01 06:17:20,911 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-01 06:17:20,912 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-01 06:17:20,920 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-04-01 06:17:20,921 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2023-04-01 06:17:20,924 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-04-01 06:17:20,926 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-01 06:17:20,926 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
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[2023-04-01 06:17:20,928 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-01 06:17:20,929 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 06:17:20,934 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 06:17:20,950 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 06:17:20,951 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 06:17:20,951 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 06:17:20,951 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 06:17:20,952 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 06:17:20,952 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 06:17:20,952 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-01 06:17:20,952 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-01 06:17:20,952 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-01 06:17:20,952 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-01 06:17:20,952 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-01 06:17:20,953 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-01 06:17:20,953 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-01 06:17:20,953 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-01 06:17:20,953 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-01 06:17:20,953 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-01 06:17:20,953 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-01 06:17:20,954 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-01 06:17:20,954 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 06:17:20,954 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 06:17:20,954 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 06:17:20,954 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 06:17:20,955 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 06:17:20,955 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 06:17:20,955 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 06:17:20,955 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 06:17:20,955 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 06:17:20,955 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 06:17:20,955 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 06:17:20,955 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 06:17:20,956 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 06:17:20,956 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 06:17:20,956 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 06:17:20,956 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 06:17:20,956 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-01 06:17:20,956 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 06:17:20,956 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 06:17:20,957 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-01 06:17:20,957 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 06:17:20,957 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 06:17:20,957 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-01 06:17:20,957 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain
[2023-04-01 06:17:21,166 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 06:17:21,188 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 06:17:21,190 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 06:17:21,192 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 06:17:21,192 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 06:17:21,194 INFO  L432   ainManager$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 06:17:22,339 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 06:17:22,554 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 06:17:22,554 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 06:17:22,576 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/911d0104f/fc327fa95c9b40df9ece3698cfe8f9e1/FLAG472fc32e3
[2023-04-01 06:17:22,932 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/911d0104f/fc327fa95c9b40df9ece3698cfe8f9e1
[2023-04-01 06:17:22,934 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 06:17:22,935 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 06:17:22,936 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 06:17:22,936 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 06:17:22,940 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 06:17:22,941 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:17:22" (1/1) ...
[2023-04-01 06:17:22,945 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14faf692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:22, skipping insertion in model container
[2023-04-01 06:17:22,945 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:17:22" (1/1) ...
[2023-04-01 06:17:22,950 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 06:17:22,984 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 06:17:23,163 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 06:17:23,167 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 06:17:23,179 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 06:17:23,223 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 06:17:23,223 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 06:17:23,245 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 06:17:23,245 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:23 WrapperNode
[2023-04-01 06:17:23,245 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 06:17:23,246 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 06:17:23,246 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 06:17:23,246 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 06:17:23,257 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:23" (1/1) ...
[2023-04-01 06:17:23,257 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:23" (1/1) ...
[2023-04-01 06:17:23,267 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:23" (1/1) ...
[2023-04-01 06:17:23,267 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:23" (1/1) ...
[2023-04-01 06:17:23,281 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:23" (1/1) ...
[2023-04-01 06:17:23,289 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:23" (1/1) ...
[2023-04-01 06:17:23,291 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:23" (1/1) ...
[2023-04-01 06:17:23,293 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:23" (1/1) ...
[2023-04-01 06:17:23,297 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 06:17:23,298 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 06:17:23,298 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 06:17:23,298 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 06:17:23,299 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:23" (1/1) ...
[2023-04-01 06:17:23,320 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 06:17:23,333 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 06:17:23,345 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 06:17:23,347 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 06:17:23,378 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 06:17:23,378 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 06:17:23,378 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 06:17:23,379 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-04-01 06:17:23,379 INFO  L138     BoogieDeclarations]: Found implementation of procedure node1
[2023-04-01 06:17:23,379 INFO  L138     BoogieDeclarations]: Found implementation of procedure node2
[2023-04-01 06:17:23,379 INFO  L138     BoogieDeclarations]: Found implementation of procedure node3
[2023-04-01 06:17:23,379 INFO  L138     BoogieDeclarations]: Found implementation of procedure node4
[2023-04-01 06:17:23,379 INFO  L138     BoogieDeclarations]: Found implementation of procedure node5
[2023-04-01 06:17:23,379 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2023-04-01 06:17:23,380 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2023-04-01 06:17:23,380 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 06:17:23,380 INFO  L138     BoogieDeclarations]: Found implementation of procedure assert
[2023-04-01 06:17:23,380 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 06:17:23,380 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 06:17:23,380 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 06:17:23,380 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 06:17:23,380 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2023-04-01 06:17:23,381 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2023-04-01 06:17:23,381 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2023-04-01 06:17:23,381 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2023-04-01 06:17:23,381 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-04-01 06:17:23,381 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2023-04-01 06:17:23,381 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2023-04-01 06:17:23,381 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2023-04-01 06:17:23,381 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2023-04-01 06:17:23,382 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2023-04-01 06:17:23,382 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2023-04-01 06:17:23,382 INFO  L130     BoogieDeclarations]: Found specification of procedure node5
[2023-04-01 06:17:23,382 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2023-04-01 06:17:23,382 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2023-04-01 06:17:23,382 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 06:17:23,382 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 06:17:23,383 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 06:17:23,383 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 06:17:23,383 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 06:17:23,383 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 06:17:23,383 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 06:17:23,536 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 06:17:23,538 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 06:17:24,050 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 06:17:24,515 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 06:17:24,515 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 06:17:24,517 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:17:24 BoogieIcfgContainer
[2023-04-01 06:17:24,518 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 06:17:24,522 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 06:17:24,522 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 06:17:24,525 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 06:17:24,525 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:17:22" (1/3) ...
[2023-04-01 06:17:24,526 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a66762a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:17:24, skipping insertion in model container
[2023-04-01 06:17:24,526 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:17:23" (2/3) ...
[2023-04-01 06:17:24,526 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a66762a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:17:24, skipping insertion in model container
[2023-04-01 06:17:24,527 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:17:24" (3/3) ...
[2023-04-01 06:17:24,528 INFO  L112   eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c
[2023-04-01 06:17:24,545 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 06:17:24,545 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 06:17:24,599 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 06:17:24,606 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;@30969d83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-01 06:17:24,606 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 06:17:24,612 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 06:17:24,620 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2023-04-01 06:17:24,620 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 06:17:24,621 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 06:17:24,622 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 06:17:24,628 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 06:17:24,628 INFO  L85        PathProgramCache]: Analyzing trace with hash 599623193, now seen corresponding path program 1 times
[2023-04-01 06:17:24,637 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 06:17:24,637 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757446868]
[2023-04-01 06:17:24,637 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:17:24,638 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 06:17:25,125 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:17:29,365 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 06:17:29,366 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 06:17:29,366 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757446868]
[2023-04-01 06:17:29,367 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757446868] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 06:17:29,367 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 06:17:29,367 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29
[2023-04-01 06:17:29,368 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116967680]
[2023-04-01 06:17:29,369 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 06:17:29,373 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2023-04-01 06:17:29,373 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 06:17:29,416 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2023-04-01 06:17:29,419 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812
[2023-04-01 06:17:29,421 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 06:17:31,210 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 06:17:31,210 INFO  L93              Difference]: Finished difference Result 108 states and 122 transitions.
[2023-04-01 06:17:31,212 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. 
[2023-04-01 06:17:31,213 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 06:17:31,213 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 06:17:31,220 INFO  L225             Difference]: With dead ends: 108
[2023-04-01 06:17:31,220 INFO  L226             Difference]: Without dead ends: 77
[2023-04-01 06:17:31,224 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=531, Invalid=2775, Unknown=0, NotChecked=0, Total=3306
[2023-04-01 06:17:31,227 INFO  L413           NwaCegarLoop]: 23 mSDtfsCounter, 244 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time
[2023-04-01 06:17:31,228 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 191 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-04-01 06:17:31,243 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2023-04-01 06:17:31,287 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67.
[2023-04-01 06:17:31,289 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 06:17:31,292 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions.
[2023-04-01 06:17:31,293 INFO  L78                 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 38
[2023-04-01 06:17:31,294 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 06:17:31,295 INFO  L495      AbstractCegarLoop]: Abstraction has 67 states and 67 transitions.
[2023-04-01 06:17:31,295 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 06:17:31,296 INFO  L276                IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions.
[2023-04-01 06:17:31,298 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2023-04-01 06:17:31,298 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 06:17:31,298 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 06:17:31,299 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 06:17:31,299 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 06:17:31,299 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 06:17:31,300 INFO  L85        PathProgramCache]: Analyzing trace with hash -1359144806, now seen corresponding path program 1 times
[2023-04-01 06:17:31,300 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 06:17:31,300 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194242517]
[2023-04-01 06:17:31,300 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:17:31,300 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 06:17:31,662 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:17:47,563 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 06:17:47,563 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 06:17:47,563 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194242517]
[2023-04-01 06:17:47,564 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194242517] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 06:17:47,564 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900379427]
[2023-04-01 06:17:47,564 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:17:47,564 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 06:17:47,564 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 06:17:47,567 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 06:17:47,571 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 06:17:47,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:17:47,870 INFO  L262         TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 208 conjunts are in the unsatisfiable core
[2023-04-01 06:17:47,915 INFO  L285         TraceCheckSpWp]: Computing forward predicates...