/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/splice-1.i


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


This is Ultimate 0.2.1-dev-36cd7be
[2021-02-23 13:35:15,012 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-02-23 13:35:15,015 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-02-23 13:35:15,055 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-02-23 13:35:15,056 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-23 13:35:15,057 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-02-23 13:35:15,072 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-02-23 13:35:15,075 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-02-23 13:35:15,077 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-02-23 13:35:15,078 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2021-02-23 13:35:15,081 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-02-23 13:35:15,082 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-02-23 13:35:15,084 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-02-23 13:35:15,085 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-23 13:35:15,086 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-23 13:35:15,087 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-23 13:35:15,089 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-23 13:35:15,091 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-02-23 13:35:15,093 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-23 13:35:15,098 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-23 13:35:15,100 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-02-23 13:35:15,100 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-02-23 13:35:15,107 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-02-23 13:35:15,108 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-02-23 13:35:15,109 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-02-23 13:35:15,112 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-02-23 13:35:15,113 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-02-23 13:35:15,114 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2021-02-23 13:35:15,124 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2021-02-23 13:35:15,126 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-02-23 13:35:15,128 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2021-02-23 13:35:15,179 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-02-23 13:35:15,179 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-23 13:35:15,184 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-02-23 13:35:15,184 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-02-23 13:35:15,184 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-02-23 13:35:15,185 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-23 13:35:15,185 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-02-23 13:35:15,185 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-02-23 13:35:15,185 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-02-23 13:35:15,186 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-02-23 13:35:15,186 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-02-23 13:35:15,187 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-23 13:35:15,187 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-02-23 13:35:15,187 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-02-23 13:35:15,187 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-02-23 13:35:15,187 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-02-23 13:35:15,188 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-02-23 13:35:15,188 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-23 13:35:15,188 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-02-23 13:35:15,188 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-02-23 13:35:15,189 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-23 13:35:15,189 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-23 13:35:15,189 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-02-23 13:35:15,189 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-02-23 13:35:15,189 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-02-23 13:35:15,190 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-02-23 13:35:15,190 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-23 13:35:15,190 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-02-23 13:35:15,190 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-23 13:35:15,612 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-23 13:35:15,638 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-23 13:35:15,641 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-23 13:35:15,642 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-02-23 13:35:15,643 INFO  L275        PluginConnector]: CDTParser initialized
[2021-02-23 13:35:15,644 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i
[2021-02-23 13:35:15,721 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70138b60f/a8a25e76c5dd404aa615c651d604d7c0/FLAG922e41515
[2021-02-23 13:35:16,434 INFO  L306              CDTParser]: Found 1 translation units.
[2021-02-23 13:35:16,438 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/splice-1.i
[2021-02-23 13:35:16,464 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70138b60f/a8a25e76c5dd404aa615c651d604d7c0/FLAG922e41515
[2021-02-23 13:35:16,697 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70138b60f/a8a25e76c5dd404aa615c651d604d7c0
[2021-02-23 13:35:16,701 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-23 13:35:16,717 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-23 13:35:16,720 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-23 13:35:16,720 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-23 13:35:16,725 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-23 13:35:16,726 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:35:16" (1/1) ...
[2021-02-23 13:35:16,729 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a434844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:16, skipping insertion in model container
[2021-02-23 13:35:16,729 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:35:16" (1/1) ...
[2021-02-23 13:35:16,738 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-02-23 13:35:16,806 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-02-23 13:35:17,186 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/splice-1.i[23721,23734]
[2021-02-23 13:35:17,191 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-02-23 13:35:17,200 INFO  L203         MainTranslator]: Completed pre-run
[2021-02-23 13:35:17,253 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/splice-1.i[23721,23734]
[2021-02-23 13:35:17,255 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-02-23 13:35:17,322 INFO  L208         MainTranslator]: Completed translation
[2021-02-23 13:35:17,323 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:17 WrapperNode
[2021-02-23 13:35:17,323 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-23 13:35:17,324 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-23 13:35:17,324 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-23 13:35:17,325 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-02-23 13:35:17,339 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:17" (1/1) ...
[2021-02-23 13:35:17,340 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:17" (1/1) ...
[2021-02-23 13:35:17,356 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:17" (1/1) ...
[2021-02-23 13:35:17,356 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:17" (1/1) ...
[2021-02-23 13:35:17,375 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:17" (1/1) ...
[2021-02-23 13:35:17,387 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:17" (1/1) ...
[2021-02-23 13:35:17,394 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:17" (1/1) ...
[2021-02-23 13:35:17,407 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-23 13:35:17,408 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-23 13:35:17,409 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-02-23 13:35:17,409 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-02-23 13:35:17,410 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:17" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-23 13:35:17,519 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-23 13:35:17,519 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-23 13:35:17,519 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-23 13:35:17,520 INFO  L138     BoogieDeclarations]: Found implementation of procedure __bswap_32
[2021-02-23 13:35:17,520 INFO  L138     BoogieDeclarations]: Found implementation of procedure __bswap_64
[2021-02-23 13:35:17,520 INFO  L138     BoogieDeclarations]: Found implementation of procedure __uint16_identity
[2021-02-23 13:35:17,520 INFO  L138     BoogieDeclarations]: Found implementation of procedure __uint32_identity
[2021-02-23 13:35:17,520 INFO  L138     BoogieDeclarations]: Found implementation of procedure __uint64_identity
[2021-02-23 13:35:17,520 INFO  L138     BoogieDeclarations]: Found implementation of procedure myexit
[2021-02-23 13:35:17,521 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2021-02-23 13:35:17,521 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2021-02-23 13:35:17,521 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-23 13:35:17,521 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2021-02-23 13:35:17,521 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert
[2021-02-23 13:35:17,521 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-23 13:35:17,521 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-23 13:35:17,522 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-02-23 13:35:17,522 INFO  L130     BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2021-02-23 13:35:17,522 INFO  L130     BoogieDeclarations]: Found specification of procedure atof
[2021-02-23 13:35:17,522 INFO  L130     BoogieDeclarations]: Found specification of procedure atoi
[2021-02-23 13:35:17,522 INFO  L130     BoogieDeclarations]: Found specification of procedure atol
[2021-02-23 13:35:17,522 INFO  L130     BoogieDeclarations]: Found specification of procedure atoll
[2021-02-23 13:35:17,523 INFO  L130     BoogieDeclarations]: Found specification of procedure strtod
[2021-02-23 13:35:17,523 INFO  L130     BoogieDeclarations]: Found specification of procedure strtof
[2021-02-23 13:35:17,523 INFO  L130     BoogieDeclarations]: Found specification of procedure strtold
[2021-02-23 13:35:17,523 INFO  L130     BoogieDeclarations]: Found specification of procedure strtol
[2021-02-23 13:35:17,523 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoul
[2021-02-23 13:35:17,523 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoq
[2021-02-23 13:35:17,523 INFO  L130     BoogieDeclarations]: Found specification of procedure strtouq
[2021-02-23 13:35:17,524 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoll
[2021-02-23 13:35:17,524 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoull
[2021-02-23 13:35:17,524 INFO  L130     BoogieDeclarations]: Found specification of procedure l64a
[2021-02-23 13:35:17,524 INFO  L130     BoogieDeclarations]: Found specification of procedure a64l
[2021-02-23 13:35:17,524 INFO  L130     BoogieDeclarations]: Found specification of procedure __bswap_32
[2021-02-23 13:35:17,524 INFO  L130     BoogieDeclarations]: Found specification of procedure __bswap_64
[2021-02-23 13:35:17,525 INFO  L130     BoogieDeclarations]: Found specification of procedure __uint16_identity
[2021-02-23 13:35:17,525 INFO  L130     BoogieDeclarations]: Found specification of procedure __uint32_identity
[2021-02-23 13:35:17,525 INFO  L130     BoogieDeclarations]: Found specification of procedure __uint64_identity
[2021-02-23 13:35:17,525 INFO  L130     BoogieDeclarations]: Found specification of procedure select
[2021-02-23 13:35:17,525 INFO  L130     BoogieDeclarations]: Found specification of procedure pselect
[2021-02-23 13:35:17,525 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2021-02-23 13:35:17,525 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2021-02-23 13:35:17,526 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2021-02-23 13:35:17,526 INFO  L130     BoogieDeclarations]: Found specification of procedure random
[2021-02-23 13:35:17,526 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom
[2021-02-23 13:35:17,526 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate
[2021-02-23 13:35:17,526 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate
[2021-02-23 13:35:17,526 INFO  L130     BoogieDeclarations]: Found specification of procedure random_r
[2021-02-23 13:35:17,527 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom_r
[2021-02-23 13:35:17,527 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate_r
[2021-02-23 13:35:17,527 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate_r
[2021-02-23 13:35:17,527 INFO  L130     BoogieDeclarations]: Found specification of procedure rand
[2021-02-23 13:35:17,527 INFO  L130     BoogieDeclarations]: Found specification of procedure srand
[2021-02-23 13:35:17,527 INFO  L130     BoogieDeclarations]: Found specification of procedure rand_r
[2021-02-23 13:35:17,527 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48
[2021-02-23 13:35:17,527 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48
[2021-02-23 13:35:17,528 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48
[2021-02-23 13:35:17,528 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48
[2021-02-23 13:35:17,528 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48
[2021-02-23 13:35:17,528 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48
[2021-02-23 13:35:17,528 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48
[2021-02-23 13:35:17,528 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48
[2021-02-23 13:35:17,528 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48
[2021-02-23 13:35:17,529 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48_r
[2021-02-23 13:35:17,529 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48_r
[2021-02-23 13:35:17,529 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48_r
[2021-02-23 13:35:17,529 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48_r
[2021-02-23 13:35:17,529 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48_r
[2021-02-23 13:35:17,529 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48_r
[2021-02-23 13:35:17,529 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48_r
[2021-02-23 13:35:17,530 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48_r
[2021-02-23 13:35:17,530 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48_r
[2021-02-23 13:35:17,530 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2021-02-23 13:35:17,530 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2021-02-23 13:35:17,530 INFO  L130     BoogieDeclarations]: Found specification of procedure realloc
[2021-02-23 13:35:17,530 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2021-02-23 13:35:17,530 INFO  L130     BoogieDeclarations]: Found specification of procedure alloca
[2021-02-23 13:35:17,531 INFO  L130     BoogieDeclarations]: Found specification of procedure valloc
[2021-02-23 13:35:17,531 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_memalign
[2021-02-23 13:35:17,531 INFO  L130     BoogieDeclarations]: Found specification of procedure aligned_alloc
[2021-02-23 13:35:17,531 INFO  L130     BoogieDeclarations]: Found specification of procedure atexit
[2021-02-23 13:35:17,531 INFO  L130     BoogieDeclarations]: Found specification of procedure at_quick_exit
[2021-02-23 13:35:17,531 INFO  L130     BoogieDeclarations]: Found specification of procedure on_exit
[2021-02-23 13:35:17,532 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2021-02-23 13:35:17,532 INFO  L130     BoogieDeclarations]: Found specification of procedure quick_exit
[2021-02-23 13:35:17,532 INFO  L130     BoogieDeclarations]: Found specification of procedure _Exit
[2021-02-23 13:35:17,532 INFO  L130     BoogieDeclarations]: Found specification of procedure getenv
[2021-02-23 13:35:17,532 INFO  L130     BoogieDeclarations]: Found specification of procedure putenv
[2021-02-23 13:35:17,532 INFO  L130     BoogieDeclarations]: Found specification of procedure setenv
[2021-02-23 13:35:17,532 INFO  L130     BoogieDeclarations]: Found specification of procedure unsetenv
[2021-02-23 13:35:17,533 INFO  L130     BoogieDeclarations]: Found specification of procedure clearenv
[2021-02-23 13:35:17,533 INFO  L130     BoogieDeclarations]: Found specification of procedure mktemp
[2021-02-23 13:35:17,533 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemp
[2021-02-23 13:35:17,533 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemps
[2021-02-23 13:35:17,533 INFO  L130     BoogieDeclarations]: Found specification of procedure mkdtemp
[2021-02-23 13:35:17,533 INFO  L130     BoogieDeclarations]: Found specification of procedure system
[2021-02-23 13:35:17,533 INFO  L130     BoogieDeclarations]: Found specification of procedure realpath
[2021-02-23 13:35:17,534 INFO  L130     BoogieDeclarations]: Found specification of procedure bsearch
[2021-02-23 13:35:17,534 INFO  L130     BoogieDeclarations]: Found specification of procedure qsort
[2021-02-23 13:35:17,534 INFO  L130     BoogieDeclarations]: Found specification of procedure abs
[2021-02-23 13:35:17,534 INFO  L130     BoogieDeclarations]: Found specification of procedure labs
[2021-02-23 13:35:17,534 INFO  L130     BoogieDeclarations]: Found specification of procedure llabs
[2021-02-23 13:35:17,534 INFO  L130     BoogieDeclarations]: Found specification of procedure div
[2021-02-23 13:35:17,534 INFO  L130     BoogieDeclarations]: Found specification of procedure ldiv
[2021-02-23 13:35:17,535 INFO  L130     BoogieDeclarations]: Found specification of procedure lldiv
[2021-02-23 13:35:17,535 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt
[2021-02-23 13:35:17,535 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt
[2021-02-23 13:35:17,535 INFO  L130     BoogieDeclarations]: Found specification of procedure gcvt
[2021-02-23 13:35:17,535 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt
[2021-02-23 13:35:17,535 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt
[2021-02-23 13:35:17,535 INFO  L130     BoogieDeclarations]: Found specification of procedure qgcvt
[2021-02-23 13:35:17,536 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt_r
[2021-02-23 13:35:17,536 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt_r
[2021-02-23 13:35:17,536 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt_r
[2021-02-23 13:35:17,536 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt_r
[2021-02-23 13:35:17,536 INFO  L130     BoogieDeclarations]: Found specification of procedure mblen
[2021-02-23 13:35:17,536 INFO  L130     BoogieDeclarations]: Found specification of procedure mbtowc
[2021-02-23 13:35:17,537 INFO  L130     BoogieDeclarations]: Found specification of procedure wctomb
[2021-02-23 13:35:17,537 INFO  L130     BoogieDeclarations]: Found specification of procedure mbstowcs
[2021-02-23 13:35:17,537 INFO  L130     BoogieDeclarations]: Found specification of procedure wcstombs
[2021-02-23 13:35:17,537 INFO  L130     BoogieDeclarations]: Found specification of procedure rpmatch
[2021-02-23 13:35:17,537 INFO  L130     BoogieDeclarations]: Found specification of procedure getsubopt
[2021-02-23 13:35:17,537 INFO  L130     BoogieDeclarations]: Found specification of procedure getloadavg
[2021-02-23 13:35:17,537 INFO  L130     BoogieDeclarations]: Found specification of procedure myexit
[2021-02-23 13:35:17,538 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2021-02-23 13:35:17,538 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2021-02-23 13:35:17,538 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2021-02-23 13:35:17,538 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2021-02-23 13:35:17,538 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2021-02-23 13:35:17,538 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2021-02-23 13:35:17,538 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-23 13:35:17,539 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-23 13:35:17,539 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-23 13:35:17,539 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-23 13:35:17,880 INFO  L759   $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true;
[2021-02-23 13:35:18,117 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-23 13:35:18,118 INFO  L299             CfgBuilder]: Removed 4 assume(true) statements.
[2021-02-23 13:35:18,122 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:35:18 BoogieIcfgContainer
[2021-02-23 13:35:18,126 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-23 13:35:18,130 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-23 13:35:18,131 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-02-23 13:35:18,135 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-02-23 13:35:18,140 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:35:16" (1/3) ...
[2021-02-23 13:35:18,142 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4023c2c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:35:18, skipping insertion in model container
[2021-02-23 13:35:18,142 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:17" (2/3) ...
[2021-02-23 13:35:18,143 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4023c2c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:35:18, skipping insertion in model container
[2021-02-23 13:35:18,143 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:35:18" (3/3) ...
[2021-02-23 13:35:18,145 INFO  L111   eAbstractionObserver]: Analyzing ICFG splice-1.i
[2021-02-23 13:35:18,154 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-02-23 13:35:18,160 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-23 13:35:18,182 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-23 13:35:18,223 INFO  L376      AbstractCegarLoop]: Interprodecural is true
[2021-02-23 13:35:18,223 INFO  L377      AbstractCegarLoop]: Hoare is true
[2021-02-23 13:35:18,224 INFO  L378      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-02-23 13:35:18,224 INFO  L379      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-23 13:35:18,224 INFO  L380      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-23 13:35:18,224 INFO  L381      AbstractCegarLoop]: Difference is false
[2021-02-23 13:35:18,224 INFO  L382      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-23 13:35:18,224 INFO  L386      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-23 13:35:18,246 INFO  L276                IsEmpty]: Start isEmpty. Operand 36 states.
[2021-02-23 13:35:18,252 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2021-02-23 13:35:18,252 INFO  L414         BasicCegarLoop]: Found error trace
[2021-02-23 13:35:18,253 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-23 13:35:18,253 INFO  L428      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-23 13:35:18,262 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-02-23 13:35:18,263 INFO  L82        PathProgramCache]: Analyzing trace with hash -740482777, now seen corresponding path program 1 times
[2021-02-23 13:35:18,274 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-23 13:35:18,275 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479026324]
[2021-02-23 13:35:18,276 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-23 13:35:18,439 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 13:35:18,531 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:18,532 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:35:18,533 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:18,534 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:35:18,563 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-23 13:35:18,568 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 13:35:18,579 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:18,580 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:35:18,583 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-23 13:35:18,584 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479026324]
[2021-02-23 13:35:18,585 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-23 13:35:18,585 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-02-23 13:35:18,586 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946063]
[2021-02-23 13:35:18,591 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-02-23 13:35:18,591 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-23 13:35:18,605 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-02-23 13:35:18,606 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-02-23 13:35:18,609 INFO  L87              Difference]: Start difference. First operand 36 states. Second operand 3 states.
[2021-02-23 13:35:18,715 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-23 13:35:18,716 INFO  L93              Difference]: Finished difference Result 54 states and 77 transitions.
[2021-02-23 13:35:18,716 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-02-23 13:35:18,718 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 16
[2021-02-23 13:35:18,719 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-23 13:35:18,726 INFO  L225             Difference]: With dead ends: 54
[2021-02-23 13:35:18,727 INFO  L226             Difference]: Without dead ends: 27
[2021-02-23 13:35:18,730 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-02-23 13:35:18,753 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2021-02-23 13:35:18,777 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2021-02-23 13:35:18,778 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2021-02-23 13:35:18,782 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions.
[2021-02-23 13:35:18,784 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 16
[2021-02-23 13:35:18,784 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-02-23 13:35:18,784 INFO  L480      AbstractCegarLoop]: Abstraction has 27 states and 33 transitions.
[2021-02-23 13:35:18,784 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2021-02-23 13:35:18,785 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions.
[2021-02-23 13:35:18,786 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-02-23 13:35:18,786 INFO  L414         BasicCegarLoop]: Found error trace
[2021-02-23 13:35:18,786 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-23 13:35:18,787 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-23 13:35:18,787 INFO  L428      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-23 13:35:18,788 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-02-23 13:35:18,788 INFO  L82        PathProgramCache]: Analyzing trace with hash -1229893411, now seen corresponding path program 1 times
[2021-02-23 13:35:18,788 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-23 13:35:18,790 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389760601]
[2021-02-23 13:35:18,790 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-23 13:35:18,852 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 13:35:18,904 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:18,905 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:35:18,910 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:18,911 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-23 13:35:18,918 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:18,919 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-23 13:35:18,927 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:18,928 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:35:18,975 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-23 13:35:18,978 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 13:35:18,986 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:18,986 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:35:18,989 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-23 13:35:18,989 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389760601]
[2021-02-23 13:35:18,989 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-23 13:35:18,989 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-02-23 13:35:18,990 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724948937]
[2021-02-23 13:35:18,991 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-02-23 13:35:18,991 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-23 13:35:18,992 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-02-23 13:35:18,992 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-02-23 13:35:18,993 INFO  L87              Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 5 states.
[2021-02-23 13:35:19,099 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-23 13:35:19,099 INFO  L93              Difference]: Finished difference Result 44 states and 55 transitions.
[2021-02-23 13:35:19,100 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-02-23 13:35:19,100 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 18
[2021-02-23 13:35:19,100 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-23 13:35:19,101 INFO  L225             Difference]: With dead ends: 44
[2021-02-23 13:35:19,102 INFO  L226             Difference]: Without dead ends: 37
[2021-02-23 13:35:19,103 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-02-23 13:35:19,103 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2021-02-23 13:35:19,109 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32.
[2021-02-23 13:35:19,110 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2021-02-23 13:35:19,111 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions.
[2021-02-23 13:35:19,111 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 18
[2021-02-23 13:35:19,112 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-02-23 13:35:19,112 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 40 transitions.
[2021-02-23 13:35:19,112 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2021-02-23 13:35:19,112 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions.
[2021-02-23 13:35:19,113 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2021-02-23 13:35:19,113 INFO  L414         BasicCegarLoop]: Found error trace
[2021-02-23 13:35:19,113 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-23 13:35:19,113 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-02-23 13:35:19,114 INFO  L428      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-23 13:35:19,114 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-02-23 13:35:19,114 INFO  L82        PathProgramCache]: Analyzing trace with hash -813235918, now seen corresponding path program 1 times
[2021-02-23 13:35:19,115 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-23 13:35:19,115 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460291002]
[2021-02-23 13:35:19,115 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-23 13:35:19,134 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 13:35:19,158 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:19,159 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:35:19,160 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:19,161 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-23 13:35:19,167 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:19,168 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-23 13:35:19,176 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:19,176 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:35:19,196 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-23 13:35:19,198 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 13:35:19,205 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:19,206 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:35:19,208 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-23 13:35:19,208 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460291002]
[2021-02-23 13:35:19,209 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-23 13:35:19,209 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-02-23 13:35:19,209 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037466992]
[2021-02-23 13:35:19,209 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-02-23 13:35:19,210 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-23 13:35:19,210 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-02-23 13:35:19,211 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-02-23 13:35:19,211 INFO  L87              Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 5 states.
[2021-02-23 13:35:19,308 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-23 13:35:19,309 INFO  L93              Difference]: Finished difference Result 51 states and 64 transitions.
[2021-02-23 13:35:19,309 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-02-23 13:35:19,309 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 20
[2021-02-23 13:35:19,310 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-23 13:35:19,312 INFO  L225             Difference]: With dead ends: 51
[2021-02-23 13:35:19,312 INFO  L226             Difference]: Without dead ends: 43
[2021-02-23 13:35:19,313 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-02-23 13:35:19,313 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2021-02-23 13:35:19,319 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41.
[2021-02-23 13:35:19,319 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 41 states.
[2021-02-23 13:35:19,321 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions.
[2021-02-23 13:35:19,321 INFO  L78                 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 20
[2021-02-23 13:35:19,321 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-02-23 13:35:19,321 INFO  L480      AbstractCegarLoop]: Abstraction has 41 states and 53 transitions.
[2021-02-23 13:35:19,321 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2021-02-23 13:35:19,321 INFO  L276                IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions.
[2021-02-23 13:35:19,322 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-02-23 13:35:19,322 INFO  L414         BasicCegarLoop]: Found error trace
[2021-02-23 13:35:19,323 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-23 13:35:19,323 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-02-23 13:35:19,323 INFO  L428      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-23 13:35:19,323 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-02-23 13:35:19,324 INFO  L82        PathProgramCache]: Analyzing trace with hash 1469180370, now seen corresponding path program 1 times
[2021-02-23 13:35:19,324 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-23 13:35:19,324 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349777298]
[2021-02-23 13:35:19,324 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-23 13:35:19,341 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 13:35:19,364 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:19,365 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:35:19,366 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:19,367 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-23 13:35:19,372 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:19,373 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-23 13:35:19,378 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:19,378 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-23 13:35:19,384 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:19,385 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-23 13:35:19,391 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:19,392 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:35:19,416 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-23 13:35:19,419 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 13:35:19,425 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:35:19,426 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:35:19,428 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-23 13:35:19,428 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349777298]
[2021-02-23 13:35:19,429 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-23 13:35:19,429 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-02-23 13:35:19,429 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263091295]
[2021-02-23 13:35:19,429 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-02-23 13:35:19,430 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-23 13:35:19,433 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-02-23 13:35:19,434 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2021-02-23 13:35:19,434 INFO  L87              Difference]: Start difference. First operand 41 states and 53 transitions. Second operand 7 states.
[2021-02-23 13:35:19,643 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-23 13:35:19,643 INFO  L93              Difference]: Finished difference Result 74 states and 98 transitions.
[2021-02-23 13:35:19,643 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-02-23 13:35:19,644 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 21
[2021-02-23 13:35:19,644 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-23 13:35:19,645 INFO  L225             Difference]: With dead ends: 74
[2021-02-23 13:35:19,645 INFO  L226             Difference]: Without dead ends: 47
[2021-02-23 13:35:19,646 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2021-02-23 13:35:19,646 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2021-02-23 13:35:19,659 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43.
[2021-02-23 13:35:19,659 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 43 states.
[2021-02-23 13:35:19,660 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions.
[2021-02-23 13:35:19,661 INFO  L78                 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 21
[2021-02-23 13:35:19,664 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-02-23 13:35:19,664 INFO  L480      AbstractCegarLoop]: Abstraction has 43 states and 55 transitions.
[2021-02-23 13:35:19,664 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2021-02-23 13:35:19,664 INFO  L276                IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions.
[2021-02-23 13:35:19,665 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2021-02-23 13:35:19,666 INFO  L414         BasicCegarLoop]: Found error trace
[2021-02-23 13:35:19,666 INFO  L422         BasicCegarLoop]: trace histogram [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]
[2021-02-23 13:35:19,668 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-02-23 13:35:19,668 INFO  L428      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-23 13:35:19,669 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-02-23 13:35:19,669 INFO  L82        PathProgramCache]: Analyzing trace with hash 914992199, now seen corresponding path program 1 times
[2021-02-23 13:35:19,669 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-23 13:35:19,669 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741659043]
[2021-02-23 13:35:19,670 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-23 13:35:19,740 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-23 13:35:19,741 INFO  L223             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-23 13:35:19,783 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-23 13:35:19,783 INFO  L223             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-23 13:35:19,818 INFO  L173   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-02-23 13:35:19,818 INFO  L523         BasicCegarLoop]: Counterexample might be feasible
[2021-02-23 13:35:19,818 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-02-23 13:35:19,864 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:35:19 BoogieIcfgContainer
[2021-02-23 13:35:19,864 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-23 13:35:19,866 INFO  L168              Benchmark]: Toolchain (without parser) took 3161.18 ms. Allocated memory was 157.3 MB in the beginning and 194.0 MB in the end (delta: 36.7 MB). Free memory was 131.1 MB in the beginning and 84.9 MB in the end (delta: 46.1 MB). Peak memory consumption was 83.6 MB. Max. memory is 8.0 GB.
[2021-02-23 13:35:19,867 INFO  L168              Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 157.3 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-23 13:35:19,870 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 603.37 ms. Allocated memory is still 157.3 MB. Free memory was 129.9 MB in the beginning and 107.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB.
[2021-02-23 13:35:19,872 INFO  L168              Benchmark]: Boogie Preprocessor took 83.15 ms. Allocated memory is still 157.3 MB. Free memory was 107.8 MB in the beginning and 105.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB.
[2021-02-23 13:35:19,872 INFO  L168              Benchmark]: RCFGBuilder took 717.63 ms. Allocated memory is still 157.3 MB. Free memory was 105.0 MB in the beginning and 97.4 MB in the end (delta: 7.7 MB). Peak memory consumption was 8.3 MB. Max. memory is 8.0 GB.
[2021-02-23 13:35:19,877 INFO  L168              Benchmark]: TraceAbstraction took 1734.24 ms. Allocated memory was 157.3 MB in the beginning and 194.0 MB in the end (delta: 36.7 MB). Free memory was 96.9 MB in the beginning and 84.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 48.1 MB. Max. memory is 8.0 GB.
[2021-02-23 13:35:19,882 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.21 ms. Allocated memory is still 157.3 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB.
 * CACSL2BoogieTranslator took 603.37 ms. Allocated memory is still 157.3 MB. Free memory was 129.9 MB in the beginning and 107.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB.
 * Boogie Preprocessor took 83.15 ms. Allocated memory is still 157.3 MB. Free memory was 107.8 MB in the beginning and 105.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB.
 * RCFGBuilder took 717.63 ms. Allocated memory is still 157.3 MB. Free memory was 105.0 MB in the beginning and 97.4 MB in the end (delta: 7.7 MB). Peak memory consumption was 8.3 MB. Max. memory is 8.0 GB.
 * TraceAbstraction took 1734.24 ms. Allocated memory was 157.3 MB in the beginning and 194.0 MB in the end (delta: 36.7 MB). Free memory was 96.9 MB in the beginning and 84.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 48.1 MB. Max. memory is 8.0 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 584]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L532]              int flag = 1;
[L533]              List a = (List) malloc(sizeof(struct node));
        VAL         [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}]
[L534]  COND FALSE  !(a == 0)
        VAL         [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}]
[L535]              List t;
[L536]              List l1;
[L537]              List l2;
[L538]              List b;
[L539]              List u;
[L540]              List p = a;
        VAL         [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}]
[L541]  COND TRUE   __VERIFIER_nondet_int()
[L542]  COND TRUE   \read(flag)
[L543]              p->h = 1
[L544]              flag = 0
        VAL         [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}]
[L549]              t = (List) malloc(sizeof(struct node))
        VAL         [a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}]
[L550]  COND FALSE  !(t == 0)
        VAL         [a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}]
[L551]              p->n = t
[L552]  EXPR        p->n
[L552]              p = p->n
[L541]  COND FALSE  !(__VERIFIER_nondet_int())
[L554]              p->h = 3
[L555]  EXPR        a->h
        VAL         [a={-1:0}, a->h=1, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-2:0}]
[L555]  COND FALSE  !(a->h == 3)
[L556]              flag = 1
[L557]              l1 = 0
[L558]              l2 = 0
[L559]              p = a
        VAL         [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}]
[L560]  EXPR        p->h
        VAL         [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1, t={-2:0}]
[L560]  COND TRUE   p->h != 3
[L561]              t = p
[L562]  EXPR        p->n
[L562]              p = p->n
[L563]  COND TRUE   \read(flag)
[L564]              t->n = l1
[L565]              l1 = t
[L566]              flag = 0
        VAL         [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-1:0}]
[L560]  EXPR        p->h
        VAL         [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, p->h=3, t={-1:0}]
[L560]  COND FALSE  !(p->h != 3)
[L573]              p = l1
        VAL         [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-1:0}]
[L574]  COND TRUE   p != 0
[L575]  EXPR        p->h
        VAL         [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1, t={-1:0}]
[L575]  COND TRUE   p->h != 2
[L584]              reach_error()
        VAL         [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-1:0}]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 10 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 124 SDtfs, 28 SDslu, 164 SDs, 0 SdLazy, 245 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 4711 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...