/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.6.1.ufo.BOUNDED-12.pals.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-01 00:13:30,508 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-01 00:13:30,510 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-04-01 00:13:30,540 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-04-01 00:13:30,540 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-01 00:13:30,542 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-01 00:13:30,545 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-01 00:13:30,546 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-04-01 00:13:30,547 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-04-01 00:13:30,551 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-01 00:13:30,552 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-01 00:13:30,553 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-01 00:13:30,553 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-04-01 00:13:30,555 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-04-01 00:13:30,556 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-04-01 00:13:30,557 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-01 00:13:30,557 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-01 00:13:30,557 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-01 00:13:30,559 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-01 00:13:30,562 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-01 00:13:30,563 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-01 00:13:30,564 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-01 00:13:30,565 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-01 00:13:30,566 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-01 00:13:30,572 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-04-01 00:13:30,572 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-04-01 00:13:30,572 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-04-01 00:13:30,573 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-04-01 00:13:30,573 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-04-01 00:13:30,574 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-04-01 00:13:30,574 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-04-01 00:13:30,574 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-04-01 00:13:30,575 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-01 00:13:30,576 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-01 00:13:30,576 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-04-01 00:13:30,576 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2023-04-01 00:13:30,577 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2023-04-01 00:13:30,577 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2023-04-01 00:13:30,577 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2023-04-01 00:13:30,577 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2023-04-01 00:13:30,578 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 00:13:30,579 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 00:13:30,601 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 00:13:30,601 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 00:13:30,602 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 00:13:30,602 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 00:13:30,603 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 00:13:30,603 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 00:13:30,603 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-01 00:13:30,604 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-01 00:13:30,604 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-01 00:13:30,604 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-01 00:13:30,604 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-01 00:13:30,604 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-01 00:13:30,604 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-01 00:13:30,605 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-01 00:13:30,605 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-01 00:13:30,605 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-01 00:13:30,605 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-01 00:13:30,605 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-01 00:13:30,605 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 00:13:30,605 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 00:13:30,605 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 00:13:30,606 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 00:13:30,606 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 00:13:30,606 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 00:13:30,606 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 00:13:30,606 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 00:13:30,606 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 00:13:30,606 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 00:13:30,606 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 00:13:30,606 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 00:13:30,606 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 00:13:30,606 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 00:13:30,607 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 00:13:30,607 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 00:13:30,607 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-01 00:13:30,607 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 00:13:30,607 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 00:13:30,607 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-01 00:13:30,607 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 00:13:30,607 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 00:13:30,607 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-01 00:13:30,607 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain
[2023-04-01 00:13:30,776 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 00:13:30,789 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 00:13:30,791 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 00:13:30,792 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 00:13:30,792 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 00:13:30,793 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c
[2023-04-01 00:13:31,774 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 00:13:31,970 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 00:13:31,971 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c
[2023-04-01 00:13:31,982 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4fd2828e/06658709b4fc4aedbd76170afcdf7e89/FLAG6582bfb33
[2023-04-01 00:13:31,994 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4fd2828e/06658709b4fc4aedbd76170afcdf7e89
[2023-04-01 00:13:31,996 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 00:13:31,997 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 00:13:32,000 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 00:13:32,000 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 00:13:32,002 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 00:13:32,003 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:13:31" (1/1) ...
[2023-04-01 00:13:32,004 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16d3bb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:32, skipping insertion in model container
[2023-04-01 00:13:32,004 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:13:31" (1/1) ...
[2023-04-01 00:13:32,010 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 00:13:32,047 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 00:13:32,210 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.6.1.ufo.BOUNDED-12.pals.c[16977,16990]
[2023-04-01 00:13:32,213 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 00:13:32,221 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 00:13:32,259 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.6.1.ufo.BOUNDED-12.pals.c[16977,16990]
[2023-04-01 00:13:32,259 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 00:13:32,271 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 00:13:32,271 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:32 WrapperNode
[2023-04-01 00:13:32,271 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 00:13:32,272 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 00:13:32,272 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 00:13:32,272 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 00:13:32,281 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:32" (1/1) ...
[2023-04-01 00:13:32,281 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:32" (1/1) ...
[2023-04-01 00:13:32,288 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:32" (1/1) ...
[2023-04-01 00:13:32,289 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:32" (1/1) ...
[2023-04-01 00:13:32,298 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:32" (1/1) ...
[2023-04-01 00:13:32,323 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:32" (1/1) ...
[2023-04-01 00:13:32,325 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:32" (1/1) ...
[2023-04-01 00:13:32,327 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:32" (1/1) ...
[2023-04-01 00:13:32,333 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 00:13:32,334 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 00:13:32,334 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 00:13:32,334 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 00:13:32,335 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:32" (1/1) ...
[2023-04-01 00:13:32,339 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 00:13:32,350 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 00:13:32,379 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 00:13:32,398 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 00:13:32,411 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 00:13:32,413 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 00:13:32,413 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 00:13:32,414 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-04-01 00:13:32,414 INFO  L138     BoogieDeclarations]: Found implementation of procedure node1
[2023-04-01 00:13:32,414 INFO  L138     BoogieDeclarations]: Found implementation of procedure node2
[2023-04-01 00:13:32,414 INFO  L138     BoogieDeclarations]: Found implementation of procedure node3
[2023-04-01 00:13:32,415 INFO  L138     BoogieDeclarations]: Found implementation of procedure node4
[2023-04-01 00:13:32,415 INFO  L138     BoogieDeclarations]: Found implementation of procedure node5
[2023-04-01 00:13:32,415 INFO  L138     BoogieDeclarations]: Found implementation of procedure node6
[2023-04-01 00:13:32,415 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2023-04-01 00:13:32,415 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2023-04-01 00:13:32,415 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 00:13:32,415 INFO  L138     BoogieDeclarations]: Found implementation of procedure assert
[2023-04-01 00:13:32,415 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 00:13:32,415 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 00:13:32,415 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 00:13:32,415 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 00:13:32,415 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2023-04-01 00:13:32,415 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2023-04-01 00:13:32,416 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2023-04-01 00:13:32,416 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-04-01 00:13:32,416 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2023-04-01 00:13:32,416 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2023-04-01 00:13:32,416 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2023-04-01 00:13:32,416 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2023-04-01 00:13:32,416 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2023-04-01 00:13:32,416 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2023-04-01 00:13:32,416 INFO  L130     BoogieDeclarations]: Found specification of procedure node5
[2023-04-01 00:13:32,416 INFO  L130     BoogieDeclarations]: Found specification of procedure node6
[2023-04-01 00:13:32,416 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2023-04-01 00:13:32,416 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2023-04-01 00:13:32,417 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 00:13:32,417 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 00:13:32,417 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 00:13:32,417 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 00:13:32,417 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 00:13:32,417 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 00:13:32,417 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 00:13:32,536 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 00:13:32,537 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 00:13:32,962 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 00:13:33,339 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 00:13:33,340 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 00:13:33,342 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:13:33 BoogieIcfgContainer
[2023-04-01 00:13:33,342 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 00:13:33,344 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 00:13:33,344 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 00:13:33,346 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 00:13:33,346 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:13:31" (1/3) ...
[2023-04-01 00:13:33,347 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4faeca88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:13:33, skipping insertion in model container
[2023-04-01 00:13:33,347 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:13:32" (2/3) ...
[2023-04-01 00:13:33,347 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4faeca88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:13:33, skipping insertion in model container
[2023-04-01 00:13:33,347 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:13:33" (3/3) ...
[2023-04-01 00:13:33,349 INFO  L112   eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c
[2023-04-01 00:13:33,362 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 00:13:33,362 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 00:13:33,403 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 00:13:33,410 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;@358fb6e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-01 00:13:33,411 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 00:13:33,414 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 48 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-04-01 00:13:33,419 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2023-04-01 00:13:33,420 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 00:13:33,421 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 00:13:33,421 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 00:13:33,426 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 00:13:33,426 INFO  L85        PathProgramCache]: Analyzing trace with hash -333559910, now seen corresponding path program 1 times
[2023-04-01 00:13:33,433 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 00:13:33,433 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522809088]
[2023-04-01 00:13:33,433 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:13:33,434 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 00:13:33,779 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:13:37,990 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 00:13:37,990 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 00:13:37,990 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522809088]
[2023-04-01 00:13:37,991 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522809088] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 00:13:37,991 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 00:13:37,991 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32
[2023-04-01 00:13:37,992 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163444811]
[2023-04-01 00:13:37,992 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 00:13:37,995 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2023-04-01 00:13:37,996 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 00:13:38,030 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2023-04-01 00:13:38,032 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992
[2023-04-01 00:13:38,033 INFO  L87              Difference]: Start difference. First operand  has 48 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand  has 32 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2023-04-01 00:13:39,947 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 00:13:39,948 INFO  L93              Difference]: Finished difference Result 127 states and 140 transitions.
[2023-04-01 00:13:39,949 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. 
[2023-04-01 00:13:39,950 INFO  L78                 Accepts]: Start accepts. Automaton has  has 32 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 41
[2023-04-01 00:13:39,950 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 00:13:39,956 INFO  L225             Difference]: With dead ends: 127
[2023-04-01 00:13:39,956 INFO  L226             Difference]: Without dead ends: 86
[2023-04-01 00:13:39,960 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=684, Invalid=3476, Unknown=0, NotChecked=0, Total=4160
[2023-04-01 00:13:39,964 INFO  L413           NwaCegarLoop]: 26 mSDtfsCounter, 210 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-04-01 00:13:39,965 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 253 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-04-01 00:13:39,978 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2023-04-01 00:13:40,012 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74.
[2023-04-01 00:13:40,013 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 74 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19)
[2023-04-01 00:13:40,017 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions.
[2023-04-01 00:13:40,018 INFO  L78                 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 41
[2023-04-01 00:13:40,019 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 00:13:40,019 INFO  L495      AbstractCegarLoop]: Abstraction has 74 states and 74 transitions.
[2023-04-01 00:13:40,020 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 32 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2023-04-01 00:13:40,020 INFO  L276                IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions.
[2023-04-01 00:13:40,022 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 72
[2023-04-01 00:13:40,023 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 00:13:40,023 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 00:13:40,023 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 00:13:40,023 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 00:13:40,024 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 00:13:40,024 INFO  L85        PathProgramCache]: Analyzing trace with hash -1904421125, now seen corresponding path program 1 times
[2023-04-01 00:13:40,024 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 00:13:40,024 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870728599]
[2023-04-01 00:13:40,024 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:13:40,024 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 00:13:40,341 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:13:57,838 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-04-01 00:13:57,839 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 00:13:57,839 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870728599]
[2023-04-01 00:13:57,839 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870728599] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 00:13:57,839 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762790009]
[2023-04-01 00:13:57,839 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 00:13:57,839 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 00:13:57,840 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 00:13:57,842 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 00:13:57,851 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 00:13:58,108 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 00:13:58,124 INFO  L262         TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 246 conjunts are in the unsatisfiable core
[2023-04-01 00:13:58,156 INFO  L285         TraceCheckSpWp]: Computing forward predicates...