/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.5.1.ufo.BOUNDED-10.pals.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-03 01:52:45,198 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-03 01:52:45,199 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-04-03 01:52:45,227 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-04-03 01:52:45,228 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-03 01:52:45,228 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-03 01:52:45,230 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-03 01:52:45,231 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-04-03 01:52:45,241 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-04-03 01:52:45,241 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-03 01:52:45,242 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-03 01:52:45,244 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-03 01:52:45,244 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-04-03 01:52:45,245 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-04-03 01:52:45,246 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-04-03 01:52:45,247 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-03 01:52:45,247 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-03 01:52:45,248 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-03 01:52:45,249 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-03 01:52:45,251 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-03 01:52:45,252 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-03 01:52:45,259 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-03 01:52:45,262 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-03 01:52:45,263 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-03 01:52:45,266 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-04-03 01:52:45,266 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-04-03 01:52:45,267 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-04-03 01:52:45,267 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-04-03 01:52:45,268 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-04-03 01:52:45,268 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-04-03 01:52:45,269 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-04-03 01:52:45,269 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-04-03 01:52:45,270 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-03 01:52:45,270 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-03 01:52:45,271 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-04-03 01:52:45,271 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2023-04-03 01:52:45,272 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2023-04-03 01:52:45,278 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2023-04-03 01:52:45,279 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-03 01:52:45,280 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
[2023-04-03 01:52:45,314 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-03 01:52:45,314 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-03 01:52:45,314 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-03 01:52:45,314 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-03 01:52:45,315 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-03 01:52:45,315 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-03 01:52:45,315 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-03 01:52:45,315 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-03 01:52:45,315 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-03 01:52:45,316 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-03 01:52:45,316 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-03 01:52:45,316 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-03 01:52:45,316 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-03 01:52:45,316 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-03 01:52:45,316 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-03 01:52:45,316 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-03 01:52:45,320 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-03 01:52:45,320 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-03 01:52:45,321 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-03 01:52:45,321 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-03 01:52:45,321 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-03 01:52:45,321 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-03 01:52:45,321 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-03 01:52:45,322 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-03 01:52:45,322 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-03 01:52:45,322 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-03 01:52:45,322 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-03 01:52:45,322 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-03 01:52:45,323 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-03 01:52:45,323 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-03 01:52:45,323 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-03 01:52:45,323 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-03 01:52:45,323 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-03 01:52:45,324 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-03 01:52:45,324 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-03 01:52:45,324 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-03 01:52:45,325 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-03 01:52:45,325 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-03 01:52:45,325 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-03 01:52:45,325 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-03 01:52:45,325 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-03 01:52:45,325 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain
[2023-04-03 01:52:45,547 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-03 01:52:45,563 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-03 01:52:45,565 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-03 01:52:45,566 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-03 01:52:45,567 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-03 01:52:45,567 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c
[2023-04-03 01:52:46,701 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-03 01:52:46,855 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-03 01:52:46,855 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c
[2023-04-03 01:52:46,862 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24eb9735c/dbdcf92c40ce4bf0b27dfed7f5099326/FLAG3ec2aa8d0
[2023-04-03 01:52:46,873 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24eb9735c/dbdcf92c40ce4bf0b27dfed7f5099326
[2023-04-03 01:52:46,876 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-03 01:52:46,877 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-03 01:52:46,878 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-03 01:52:46,878 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-03 01:52:46,887 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-03 01:52:46,888 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:52:46" (1/1) ...
[2023-04-03 01:52:46,889 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243291bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:46, skipping insertion in model container
[2023-04-03 01:52:46,889 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:52:46" (1/1) ...
[2023-04-03 01:52:46,895 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-03 01:52:46,930 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-03 01:52:47,118 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.5.1.ufo.BOUNDED-10.pals.c[11270,11283]
[2023-04-03 01:52:47,121 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-03 01:52:47,130 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-03 01:52:47,180 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.5.1.ufo.BOUNDED-10.pals.c[11270,11283]
[2023-04-03 01:52:47,180 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-03 01:52:47,192 INFO  L208         MainTranslator]: Completed translation
[2023-04-03 01:52:47,192 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47 WrapperNode
[2023-04-03 01:52:47,193 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-03 01:52:47,193 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-03 01:52:47,193 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-03 01:52:47,194 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-03 01:52:47,208 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (1/1) ...
[2023-04-03 01:52:47,209 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (1/1) ...
[2023-04-03 01:52:47,218 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (1/1) ...
[2023-04-03 01:52:47,218 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (1/1) ...
[2023-04-03 01:52:47,244 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (1/1) ...
[2023-04-03 01:52:47,250 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (1/1) ...
[2023-04-03 01:52:47,261 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (1/1) ...
[2023-04-03 01:52:47,267 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (1/1) ...
[2023-04-03 01:52:47,270 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-03 01:52:47,271 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-03 01:52:47,271 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-03 01:52:47,271 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-03 01:52:47,271 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (1/1) ...
[2023-04-03 01:52:47,277 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-03 01:52:47,288 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-03 01:52:47,298 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)
[2023-04-03 01:52:47,299 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
[2023-04-03 01:52:47,325 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-03 01:52:47,325 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-03 01:52:47,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-03 01:52:47,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-04-03 01:52:47,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure node1
[2023-04-03 01:52:47,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure node2
[2023-04-03 01:52:47,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure node3
[2023-04-03 01:52:47,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure node4
[2023-04-03 01:52:47,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure node5
[2023-04-03 01:52:47,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2023-04-03 01:52:47,327 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2023-04-03 01:52:47,327 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-03 01:52:47,327 INFO  L138     BoogieDeclarations]: Found implementation of procedure assert
[2023-04-03 01:52:47,327 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-03 01:52:47,327 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-03 01:52:47,327 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-03 01:52:47,327 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-03 01:52:47,328 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2023-04-03 01:52:47,328 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2023-04-03 01:52:47,328 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2023-04-03 01:52:47,328 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-04-03 01:52:47,328 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2023-04-03 01:52:47,328 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2023-04-03 01:52:47,328 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2023-04-03 01:52:47,328 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2023-04-03 01:52:47,329 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2023-04-03 01:52:47,329 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2023-04-03 01:52:47,329 INFO  L130     BoogieDeclarations]: Found specification of procedure node5
[2023-04-03 01:52:47,329 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2023-04-03 01:52:47,329 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2023-04-03 01:52:47,329 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-03 01:52:47,329 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-03 01:52:47,329 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-03 01:52:47,330 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-03 01:52:47,330 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-03 01:52:47,330 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-03 01:52:47,330 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-03 01:52:47,408 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-03 01:52:47,410 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-03 01:52:47,888 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-03 01:52:48,220 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-03 01:52:48,220 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-03 01:52:48,223 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:52:48 BoogieIcfgContainer
[2023-04-03 01:52:48,223 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-03 01:52:48,226 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-03 01:52:48,226 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-03 01:52:48,229 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-03 01:52:48,229 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:52:46" (1/3) ...
[2023-04-03 01:52:48,229 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586ff834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:52:48, skipping insertion in model container
[2023-04-03 01:52:48,230 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:52:47" (2/3) ...
[2023-04-03 01:52:48,230 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586ff834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:52:48, skipping insertion in model container
[2023-04-03 01:52:48,230 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:52:48" (3/3) ...
[2023-04-03 01:52:48,231 INFO  L112   eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c
[2023-04-03 01:52:48,246 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-03 01:52:48,247 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-03 01:52:48,296 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-03 01:52:48,304 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;@1e7038db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-03 01:52:48,304 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-03 01:52:48,307 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 50 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 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)
[2023-04-03 01:52:48,314 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2023-04-03 01:52:48,314 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:52:48,315 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]
[2023-04-03 01:52:48,316 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:52:48,322 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:52:48,322 INFO  L85        PathProgramCache]: Analyzing trace with hash 572119877, now seen corresponding path program 1 times
[2023-04-03 01:52:48,328 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:52:48,329 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832091838]
[2023-04-03 01:52:48,329 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:52:48,329 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:52:48,644 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:52:51,369 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-03 01:52:51,370 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:52:51,370 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832091838]
[2023-04-03 01:52:51,371 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832091838] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-03 01:52:51,371 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-03 01:52:51,371 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25
[2023-04-03 01:52:51,372 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342174370]
[2023-04-03 01:52:51,373 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-03 01:52:51,376 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2023-04-03 01:52:51,377 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-03 01:52:51,439 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2023-04-03 01:52:51,442 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600
[2023-04-03 01:52:51,445 INFO  L87              Difference]: Start difference. First operand  has 50 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 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 25 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 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)
[2023-04-03 01:52:52,676 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-03 01:52:52,676 INFO  L93              Difference]: Finished difference Result 165 states and 187 transitions.
[2023-04-03 01:52:52,678 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2023-04-03 01:52:52,679 INFO  L78                 Accepts]: Start accepts. Automaton has  has 25 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 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 40
[2023-04-03 01:52:52,679 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-03 01:52:52,686 INFO  L225             Difference]: With dead ends: 165
[2023-04-03 01:52:52,687 INFO  L226             Difference]: Without dead ends: 113
[2023-04-03 01:52:52,690 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=394, Invalid=1676, Unknown=0, NotChecked=0, Total=2070
[2023-04-03 01:52:52,692 INFO  L413           NwaCegarLoop]: 26 mSDtfsCounter, 575 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-04-03 01:52:52,693 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 149 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-04-03 01:52:52,707 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2023-04-03 01:52:52,739 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 72.
[2023-04-03 01:52:52,740 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 72 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 39 states have internal predecessors, (44), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16)
[2023-04-03 01:52:52,741 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions.
[2023-04-03 01:52:52,742 INFO  L78                 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 40
[2023-04-03 01:52:52,743 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-03 01:52:52,743 INFO  L495      AbstractCegarLoop]: Abstraction has 72 states and 77 transitions.
[2023-04-03 01:52:52,743 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 25 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 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)
[2023-04-03 01:52:52,743 INFO  L276                IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions.
[2023-04-03 01:52:52,744 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2023-04-03 01:52:52,744 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:52:52,744 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-03 01:52:52,745 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-03 01:52:52,745 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:52:52,745 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:52:52,745 INFO  L85        PathProgramCache]: Analyzing trace with hash -1643024366, now seen corresponding path program 1 times
[2023-04-03 01:52:52,746 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:52:52,746 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876522903]
[2023-04-03 01:52:52,746 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:52:52,746 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:52:52,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:52:53,126 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-03 01:52:53,126 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:52:53,126 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876522903]
[2023-04-03 01:52:53,126 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876522903] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-03 01:52:53,127 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-03 01:52:53,127 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2023-04-03 01:52:53,127 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788910371]
[2023-04-03 01:52:53,127 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-03 01:52:53,128 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-04-03 01:52:53,128 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-03 01:52:53,129 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-04-03 01:52:53,129 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110
[2023-04-03 01:52:53,129 INFO  L87              Difference]: Start difference. First operand 72 states and 77 transitions. Second operand  has 11 states, 7 states have (on average 3.142857142857143) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9)
[2023-04-03 01:52:53,449 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-03 01:52:53,449 INFO  L93              Difference]: Finished difference Result 136 states and 146 transitions.
[2023-04-03 01:52:53,449 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2023-04-03 01:52:53,450 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 7 states have (on average 3.142857142857143) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 42
[2023-04-03 01:52:53,450 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-03 01:52:53,452 INFO  L225             Difference]: With dead ends: 136
[2023-04-03 01:52:53,453 INFO  L226             Difference]: Without dead ends: 99
[2023-04-03 01:52:53,456 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272
[2023-04-03 01:52:53,458 INFO  L413           NwaCegarLoop]: 25 mSDtfsCounter, 76 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-04-03 01:52:53,459 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 108 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-04-03 01:52:53,461 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2023-04-03 01:52:53,483 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 72.
[2023-04-03 01:52:53,484 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 72 states, 38 states have (on average 1.131578947368421) internal successors, (43), 39 states have internal predecessors, (43), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16)
[2023-04-03 01:52:53,485 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions.
[2023-04-03 01:52:53,485 INFO  L78                 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 42
[2023-04-03 01:52:53,485 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-03 01:52:53,485 INFO  L495      AbstractCegarLoop]: Abstraction has 72 states and 76 transitions.
[2023-04-03 01:52:53,486 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 7 states have (on average 3.142857142857143) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9)
[2023-04-03 01:52:53,486 INFO  L276                IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions.
[2023-04-03 01:52:53,486 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2023-04-03 01:52:53,487 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:52:53,487 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-03 01:52:53,487 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-03 01:52:53,487 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:52:53,487 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:52:53,488 INFO  L85        PathProgramCache]: Analyzing trace with hash -1195686643, now seen corresponding path program 1 times
[2023-04-03 01:52:53,488 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:52:53,488 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89039919]
[2023-04-03 01:52:53,488 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:52:53,488 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:52:53,551 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:52:55,543 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-03 01:52:55,544 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:52:55,544 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89039919]
[2023-04-03 01:52:55,544 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89039919] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-03 01:52:55,544 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-03 01:52:55,544 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24
[2023-04-03 01:52:55,544 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258583008]
[2023-04-03 01:52:55,545 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-03 01:52:55,545 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2023-04-03 01:52:55,545 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-03 01:52:55,546 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2023-04-03 01:52:55,546 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552
[2023-04-03 01:52:55,546 INFO  L87              Difference]: Start difference. First operand 72 states and 76 transitions. Second operand  has 24 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9)
[2023-04-03 01:52:56,662 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-03 01:52:56,662 INFO  L93              Difference]: Finished difference Result 137 states and 146 transitions.
[2023-04-03 01:52:56,663 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. 
[2023-04-03 01:52:56,663 INFO  L78                 Accepts]: Start accepts. Automaton has  has 24 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) Word has length 42
[2023-04-03 01:52:56,663 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-03 01:52:56,664 INFO  L225             Difference]: With dead ends: 137
[2023-04-03 01:52:56,664 INFO  L226             Difference]: Without dead ends: 101
[2023-04-03 01:52:56,665 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722
[2023-04-03 01:52:56,666 INFO  L413           NwaCegarLoop]: 24 mSDtfsCounter, 331 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-04-03 01:52:56,667 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 148 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-04-03 01:52:56,667 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2023-04-03 01:52:56,687 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 72.
[2023-04-03 01:52:56,688 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 72 states, 38 states have (on average 1.105263157894737) internal successors, (42), 39 states have internal predecessors, (42), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16)
[2023-04-03 01:52:56,689 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions.
[2023-04-03 01:52:56,689 INFO  L78                 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 42
[2023-04-03 01:52:56,689 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-03 01:52:56,689 INFO  L495      AbstractCegarLoop]: Abstraction has 72 states and 75 transitions.
[2023-04-03 01:52:56,689 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 24 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9)
[2023-04-03 01:52:56,690 INFO  L276                IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions.
[2023-04-03 01:52:56,690 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2023-04-03 01:52:56,690 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:52:56,691 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-03 01:52:56,691 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-04-03 01:52:56,691 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:52:56,691 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:52:56,691 INFO  L85        PathProgramCache]: Analyzing trace with hash 202991645, now seen corresponding path program 1 times
[2023-04-03 01:52:56,691 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:52:56,692 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767589138]
[2023-04-03 01:52:56,692 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:52:56,692 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:52:56,713 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:52:57,657 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-03 01:52:57,657 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:52:57,657 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767589138]
[2023-04-03 01:52:57,657 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767589138] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-03 01:52:57,657 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-03 01:52:57,658 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2023-04-03 01:52:57,658 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627441951]
[2023-04-03 01:52:57,658 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-03 01:52:57,658 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-04-03 01:52:57,658 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-03 01:52:57,659 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-04-03 01:52:57,659 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156
[2023-04-03 01:52:57,660 INFO  L87              Difference]: Start difference. First operand 72 states and 75 transitions. Second operand  has 13 states, 8 states have (on average 2.875) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9)
[2023-04-03 01:52:57,925 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-03 01:52:57,926 INFO  L93              Difference]: Finished difference Result 112 states and 125 transitions.
[2023-04-03 01:52:57,926 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2023-04-03 01:52:57,926 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 8 states have (on average 2.875) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 43
[2023-04-03 01:52:57,926 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-03 01:52:57,927 INFO  L225             Difference]: With dead ends: 112
[2023-04-03 01:52:57,927 INFO  L226             Difference]: Without dead ends: 110
[2023-04-03 01:52:57,928 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462
[2023-04-03 01:52:57,929 INFO  L413           NwaCegarLoop]: 52 mSDtfsCounter, 39 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-04-03 01:52:57,929 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 568 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-04-03 01:52:57,930 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2023-04-03 01:52:57,953 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 81.
[2023-04-03 01:52:57,953 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 46 states have internal predecessors, (48), 18 states have call successors, (18), 18 states have call predecessors, (18), 18 states have return successors, (18), 16 states have call predecessors, (18), 17 states have call successors, (18)
[2023-04-03 01:52:57,956 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions.
[2023-04-03 01:52:57,956 INFO  L78                 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 43
[2023-04-03 01:52:57,957 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-03 01:52:57,957 INFO  L495      AbstractCegarLoop]: Abstraction has 81 states and 84 transitions.
[2023-04-03 01:52:57,957 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 8 states have (on average 2.875) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9)
[2023-04-03 01:52:57,957 INFO  L276                IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions.
[2023-04-03 01:52:57,962 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 73
[2023-04-03 01:52:57,962 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:52:57,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-03 01:52:57,963 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-04-03 01:52:57,963 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:52:57,963 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:52:57,963 INFO  L85        PathProgramCache]: Analyzing trace with hash -1814055407, now seen corresponding path program 1 times
[2023-04-03 01:52:57,964 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:52:57,964 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773251802]
[2023-04-03 01:52:57,964 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:52:57,964 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:52:58,148 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:53:07,022 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-04-03 01:53:07,022 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:53:07,022 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773251802]
[2023-04-03 01:53:07,022 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773251802] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-03 01:53:07,022 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970196900]
[2023-04-03 01:53:07,023 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:53:07,023 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-03 01:53:07,023 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-03 01:53:07,033 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)
[2023-04-03 01:53:07,044 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-04-03 01:53:07,260 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:53:07,297 INFO  L262         TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 182 conjunts are in the unsatisfiable core
[2023-04-03 01:53:07,311 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-03 01:53:52,913 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-03 01:53:52,914 INFO  L327         TraceCheckSpWp]: Computing backward predicates...