/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-b7b32d2
[2021-02-21 16:09:20,031 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-02-21 16:09:20,034 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-02-21 16:09:20,069 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-02-21 16:09:20,070 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-21 16:09:20,071 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-02-21 16:09:20,073 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-02-21 16:09:20,076 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-02-21 16:09:20,078 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-02-21 16:09:20,079 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-02-21 16:09:20,081 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-02-21 16:09:20,082 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-02-21 16:09:20,083 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-02-21 16:09:20,084 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-02-21 16:09:20,086 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-02-21 16:09:20,087 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-21 16:09:20,088 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-21 16:09:20,089 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-21 16:09:20,092 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-21 16:09:20,094 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-02-21 16:09:20,096 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-21 16:09:20,098 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-21 16:09:20,100 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-02-21 16:09:20,101 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-02-21 16:09:20,105 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-02-21 16:09:20,105 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-02-21 16:09:20,106 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-02-21 16:09:20,107 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-02-21 16:09:20,108 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-02-21 16:09:20,109 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-02-21 16:09:20,109 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-02-21 16:09:20,110 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-02-21 16:09:20,111 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-02-21 16:09:20,112 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-02-21 16:09:20,114 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-02-21 16:09:20,114 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-02-21 16:09:20,115 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-02-21 16:09:20,116 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-02-21 16:09:20,116 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-02-21 16:09:20,117 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-02-21 16:09:20,118 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-02-21 16:09:20,123 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
[2021-02-21 16:09:20,182 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-02-21 16:09:20,184 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-21 16:09:20,187 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-02-21 16:09:20,189 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-02-21 16:09:20,189 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-02-21 16:09:20,189 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-21 16:09:20,190 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-02-21 16:09:20,190 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-02-21 16:09:20,190 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-02-21 16:09:20,190 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-02-21 16:09:20,190 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-02-21 16:09:20,191 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-21 16:09:20,192 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-02-21 16:09:20,192 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-02-21 16:09:20,193 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-02-21 16:09:20,193 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-02-21 16:09:20,193 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-02-21 16:09:20,193 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-21 16:09:20,194 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-02-21 16:09:20,194 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-02-21 16:09:20,194 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-21 16:09:20,194 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-21 16:09:20,195 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-02-21 16:09:20,195 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-02-21 16:09:20,195 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-02-21 16:09:20,195 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-02-21 16:09:20,195 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-21 16:09:20,196 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-02-21 16:09:20,196 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-21 16:09:20,675 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-21 16:09:20,712 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-21 16:09:20,716 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-21 16:09:20,717 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-02-21 16:09:20,718 INFO  L275        PluginConnector]: CDTParser initialized
[2021-02-21 16:09:20,719 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i
[2021-02-21 16:09:20,818 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34cc2c905/e496437864554afbb7e854402ef6720d/FLAG0b4ca743e
[2021-02-21 16:09:21,634 INFO  L306              CDTParser]: Found 1 translation units.
[2021-02-21 16:09:21,635 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/splice-1.i
[2021-02-21 16:09:21,659 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34cc2c905/e496437864554afbb7e854402ef6720d/FLAG0b4ca743e
[2021-02-21 16:09:21,851 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34cc2c905/e496437864554afbb7e854402ef6720d
[2021-02-21 16:09:21,856 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-21 16:09:21,869 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-21 16:09:21,871 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-21 16:09:21,871 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-21 16:09:21,875 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-21 16:09:21,876 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:09:21" (1/1) ...
[2021-02-21 16:09:21,878 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e010010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:21, skipping insertion in model container
[2021-02-21 16:09:21,878 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:09:21" (1/1) ...
[2021-02-21 16:09:21,889 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-02-21 16:09:21,930 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-02-21 16:09:22,396 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]
[2021-02-21 16:09:22,401 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-02-21 16:09:22,412 INFO  L203         MainTranslator]: Completed pre-run
[2021-02-21 16:09:22,459 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]
[2021-02-21 16:09:22,461 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-02-21 16:09:22,544 INFO  L208         MainTranslator]: Completed translation
[2021-02-21 16:09:22,544 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:22 WrapperNode
[2021-02-21 16:09:22,545 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-21 16:09:22,546 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-21 16:09:22,546 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-21 16:09:22,547 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-02-21 16:09:22,562 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:22" (1/1) ...
[2021-02-21 16:09:22,563 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:22" (1/1) ...
[2021-02-21 16:09:22,584 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:22" (1/1) ...
[2021-02-21 16:09:22,585 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:22" (1/1) ...
[2021-02-21 16:09:22,602 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:22" (1/1) ...
[2021-02-21 16:09:22,608 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:22" (1/1) ...
[2021-02-21 16:09:22,612 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:22" (1/1) ...
[2021-02-21 16:09:22,620 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-21 16:09:22,621 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-21 16:09:22,621 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-02-21 16:09:22,621 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-02-21 16:09:22,622 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:22" (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
[2021-02-21 16:09:22,735 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-21 16:09:22,736 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-21 16:09:22,736 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-21 16:09:22,736 INFO  L138     BoogieDeclarations]: Found implementation of procedure __bswap_32
[2021-02-21 16:09:22,736 INFO  L138     BoogieDeclarations]: Found implementation of procedure __bswap_64
[2021-02-21 16:09:22,737 INFO  L138     BoogieDeclarations]: Found implementation of procedure __uint16_identity
[2021-02-21 16:09:22,737 INFO  L138     BoogieDeclarations]: Found implementation of procedure __uint32_identity
[2021-02-21 16:09:22,737 INFO  L138     BoogieDeclarations]: Found implementation of procedure __uint64_identity
[2021-02-21 16:09:22,737 INFO  L138     BoogieDeclarations]: Found implementation of procedure myexit
[2021-02-21 16:09:22,737 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2021-02-21 16:09:22,738 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2021-02-21 16:09:22,738 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-21 16:09:22,738 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2021-02-21 16:09:22,738 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert
[2021-02-21 16:09:22,738 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-21 16:09:22,739 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-21 16:09:22,739 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-02-21 16:09:22,739 INFO  L130     BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2021-02-21 16:09:22,739 INFO  L130     BoogieDeclarations]: Found specification of procedure atof
[2021-02-21 16:09:22,739 INFO  L130     BoogieDeclarations]: Found specification of procedure atoi
[2021-02-21 16:09:22,740 INFO  L130     BoogieDeclarations]: Found specification of procedure atol
[2021-02-21 16:09:22,740 INFO  L130     BoogieDeclarations]: Found specification of procedure atoll
[2021-02-21 16:09:22,740 INFO  L130     BoogieDeclarations]: Found specification of procedure strtod
[2021-02-21 16:09:22,740 INFO  L130     BoogieDeclarations]: Found specification of procedure strtof
[2021-02-21 16:09:22,740 INFO  L130     BoogieDeclarations]: Found specification of procedure strtold
[2021-02-21 16:09:22,740 INFO  L130     BoogieDeclarations]: Found specification of procedure strtol
[2021-02-21 16:09:22,741 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoul
[2021-02-21 16:09:22,741 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoq
[2021-02-21 16:09:22,741 INFO  L130     BoogieDeclarations]: Found specification of procedure strtouq
[2021-02-21 16:09:22,741 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoll
[2021-02-21 16:09:22,741 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoull
[2021-02-21 16:09:22,742 INFO  L130     BoogieDeclarations]: Found specification of procedure l64a
[2021-02-21 16:09:22,742 INFO  L130     BoogieDeclarations]: Found specification of procedure a64l
[2021-02-21 16:09:22,742 INFO  L130     BoogieDeclarations]: Found specification of procedure __bswap_32
[2021-02-21 16:09:22,742 INFO  L130     BoogieDeclarations]: Found specification of procedure __bswap_64
[2021-02-21 16:09:22,742 INFO  L130     BoogieDeclarations]: Found specification of procedure __uint16_identity
[2021-02-21 16:09:22,742 INFO  L130     BoogieDeclarations]: Found specification of procedure __uint32_identity
[2021-02-21 16:09:22,743 INFO  L130     BoogieDeclarations]: Found specification of procedure __uint64_identity
[2021-02-21 16:09:22,743 INFO  L130     BoogieDeclarations]: Found specification of procedure select
[2021-02-21 16:09:22,743 INFO  L130     BoogieDeclarations]: Found specification of procedure pselect
[2021-02-21 16:09:22,743 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2021-02-21 16:09:22,743 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2021-02-21 16:09:22,744 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2021-02-21 16:09:22,744 INFO  L130     BoogieDeclarations]: Found specification of procedure random
[2021-02-21 16:09:22,744 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom
[2021-02-21 16:09:22,744 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate
[2021-02-21 16:09:22,744 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate
[2021-02-21 16:09:22,744 INFO  L130     BoogieDeclarations]: Found specification of procedure random_r
[2021-02-21 16:09:22,745 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom_r
[2021-02-21 16:09:22,745 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate_r
[2021-02-21 16:09:22,745 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate_r
[2021-02-21 16:09:22,745 INFO  L130     BoogieDeclarations]: Found specification of procedure rand
[2021-02-21 16:09:22,746 INFO  L130     BoogieDeclarations]: Found specification of procedure srand
[2021-02-21 16:09:22,746 INFO  L130     BoogieDeclarations]: Found specification of procedure rand_r
[2021-02-21 16:09:22,746 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48
[2021-02-21 16:09:22,746 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48
[2021-02-21 16:09:22,746 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48
[2021-02-21 16:09:22,746 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48
[2021-02-21 16:09:22,747 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48
[2021-02-21 16:09:22,747 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48
[2021-02-21 16:09:22,747 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48
[2021-02-21 16:09:22,747 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48
[2021-02-21 16:09:22,747 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48
[2021-02-21 16:09:22,748 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48_r
[2021-02-21 16:09:22,748 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48_r
[2021-02-21 16:09:22,748 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48_r
[2021-02-21 16:09:22,748 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48_r
[2021-02-21 16:09:22,748 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48_r
[2021-02-21 16:09:22,749 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48_r
[2021-02-21 16:09:22,749 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48_r
[2021-02-21 16:09:22,749 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48_r
[2021-02-21 16:09:22,749 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48_r
[2021-02-21 16:09:22,749 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2021-02-21 16:09:22,750 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2021-02-21 16:09:22,750 INFO  L130     BoogieDeclarations]: Found specification of procedure realloc
[2021-02-21 16:09:22,750 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2021-02-21 16:09:22,750 INFO  L130     BoogieDeclarations]: Found specification of procedure alloca
[2021-02-21 16:09:22,750 INFO  L130     BoogieDeclarations]: Found specification of procedure valloc
[2021-02-21 16:09:22,751 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_memalign
[2021-02-21 16:09:22,751 INFO  L130     BoogieDeclarations]: Found specification of procedure aligned_alloc
[2021-02-21 16:09:22,751 INFO  L130     BoogieDeclarations]: Found specification of procedure atexit
[2021-02-21 16:09:22,751 INFO  L130     BoogieDeclarations]: Found specification of procedure at_quick_exit
[2021-02-21 16:09:22,751 INFO  L130     BoogieDeclarations]: Found specification of procedure on_exit
[2021-02-21 16:09:22,752 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2021-02-21 16:09:22,752 INFO  L130     BoogieDeclarations]: Found specification of procedure quick_exit
[2021-02-21 16:09:22,752 INFO  L130     BoogieDeclarations]: Found specification of procedure _Exit
[2021-02-21 16:09:22,752 INFO  L130     BoogieDeclarations]: Found specification of procedure getenv
[2021-02-21 16:09:22,752 INFO  L130     BoogieDeclarations]: Found specification of procedure putenv
[2021-02-21 16:09:22,752 INFO  L130     BoogieDeclarations]: Found specification of procedure setenv
[2021-02-21 16:09:22,752 INFO  L130     BoogieDeclarations]: Found specification of procedure unsetenv
[2021-02-21 16:09:22,753 INFO  L130     BoogieDeclarations]: Found specification of procedure clearenv
[2021-02-21 16:09:22,753 INFO  L130     BoogieDeclarations]: Found specification of procedure mktemp
[2021-02-21 16:09:22,753 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemp
[2021-02-21 16:09:22,753 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemps
[2021-02-21 16:09:22,753 INFO  L130     BoogieDeclarations]: Found specification of procedure mkdtemp
[2021-02-21 16:09:22,754 INFO  L130     BoogieDeclarations]: Found specification of procedure system
[2021-02-21 16:09:22,754 INFO  L130     BoogieDeclarations]: Found specification of procedure realpath
[2021-02-21 16:09:22,754 INFO  L130     BoogieDeclarations]: Found specification of procedure bsearch
[2021-02-21 16:09:22,754 INFO  L130     BoogieDeclarations]: Found specification of procedure qsort
[2021-02-21 16:09:22,755 INFO  L130     BoogieDeclarations]: Found specification of procedure abs
[2021-02-21 16:09:22,755 INFO  L130     BoogieDeclarations]: Found specification of procedure labs
[2021-02-21 16:09:22,755 INFO  L130     BoogieDeclarations]: Found specification of procedure llabs
[2021-02-21 16:09:22,755 INFO  L130     BoogieDeclarations]: Found specification of procedure div
[2021-02-21 16:09:22,755 INFO  L130     BoogieDeclarations]: Found specification of procedure ldiv
[2021-02-21 16:09:22,755 INFO  L130     BoogieDeclarations]: Found specification of procedure lldiv
[2021-02-21 16:09:22,756 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt
[2021-02-21 16:09:22,756 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt
[2021-02-21 16:09:22,756 INFO  L130     BoogieDeclarations]: Found specification of procedure gcvt
[2021-02-21 16:09:22,756 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt
[2021-02-21 16:09:22,756 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt
[2021-02-21 16:09:22,757 INFO  L130     BoogieDeclarations]: Found specification of procedure qgcvt
[2021-02-21 16:09:22,757 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt_r
[2021-02-21 16:09:22,757 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt_r
[2021-02-21 16:09:22,757 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt_r
[2021-02-21 16:09:22,757 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt_r
[2021-02-21 16:09:22,758 INFO  L130     BoogieDeclarations]: Found specification of procedure mblen
[2021-02-21 16:09:22,758 INFO  L130     BoogieDeclarations]: Found specification of procedure mbtowc
[2021-02-21 16:09:22,758 INFO  L130     BoogieDeclarations]: Found specification of procedure wctomb
[2021-02-21 16:09:22,758 INFO  L130     BoogieDeclarations]: Found specification of procedure mbstowcs
[2021-02-21 16:09:22,758 INFO  L130     BoogieDeclarations]: Found specification of procedure wcstombs
[2021-02-21 16:09:22,758 INFO  L130     BoogieDeclarations]: Found specification of procedure rpmatch
[2021-02-21 16:09:22,759 INFO  L130     BoogieDeclarations]: Found specification of procedure getsubopt
[2021-02-21 16:09:22,759 INFO  L130     BoogieDeclarations]: Found specification of procedure getloadavg
[2021-02-21 16:09:22,759 INFO  L130     BoogieDeclarations]: Found specification of procedure myexit
[2021-02-21 16:09:22,759 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2021-02-21 16:09:22,759 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2021-02-21 16:09:22,760 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2021-02-21 16:09:22,760 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2021-02-21 16:09:22,760 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2021-02-21 16:09:22,760 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2021-02-21 16:09:22,760 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-21 16:09:22,760 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-21 16:09:22,761 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-21 16:09:22,761 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-21 16:09:23,333 INFO  L759   $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true;
[2021-02-21 16:09:23,580 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-21 16:09:23,581 INFO  L299             CfgBuilder]: Removed 4 assume(true) statements.
[2021-02-21 16:09:23,583 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:09:23 BoogieIcfgContainer
[2021-02-21 16:09:23,583 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-21 16:09:23,585 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-21 16:09:23,586 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-02-21 16:09:23,589 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-02-21 16:09:23,590 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:09:21" (1/3) ...
[2021-02-21 16:09:23,591 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18be0963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:09:23, skipping insertion in model container
[2021-02-21 16:09:23,591 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:22" (2/3) ...
[2021-02-21 16:09:23,592 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18be0963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:09:23, skipping insertion in model container
[2021-02-21 16:09:23,592 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:09:23" (3/3) ...
[2021-02-21 16:09:23,594 INFO  L111   eAbstractionObserver]: Analyzing ICFG splice-1.i
[2021-02-21 16:09:23,601 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-02-21 16:09:23,607 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-21 16:09:23,631 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-21 16:09:23,662 INFO  L376      AbstractCegarLoop]: Interprodecural is true
[2021-02-21 16:09:23,662 INFO  L377      AbstractCegarLoop]: Hoare is true
[2021-02-21 16:09:23,663 INFO  L378      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-02-21 16:09:23,663 INFO  L379      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-21 16:09:23,663 INFO  L380      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-21 16:09:23,663 INFO  L381      AbstractCegarLoop]: Difference is false
[2021-02-21 16:09:23,688 INFO  L382      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-21 16:09:23,688 INFO  L386      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-21 16:09:23,711 INFO  L276                IsEmpty]: Start isEmpty. Operand 36 states.
[2021-02-21 16:09:23,718 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2021-02-21 16:09:23,718 INFO  L414         BasicCegarLoop]: Found error trace
[2021-02-21 16:09:23,719 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-21 16:09:23,719 INFO  L428      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-21 16:09:23,726 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-02-21 16:09:23,726 INFO  L82        PathProgramCache]: Analyzing trace with hash -740482777, now seen corresponding path program 1 times
[2021-02-21 16:09:23,747 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-21 16:09:23,748 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280367978]
[2021-02-21 16:09:23,748 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-21 16:09:23,879 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 16:09:23,934 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:23,936 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:09:23,937 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:23,938 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:09:23,983 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-21 16:09:23,988 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 16:09:23,999 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:24,000 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:09:24,004 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-21 16:09:24,005 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280367978]
[2021-02-21 16:09:24,006 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-21 16:09:24,006 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-02-21 16:09:24,007 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172371910]
[2021-02-21 16:09:24,012 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-02-21 16:09:24,012 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-21 16:09:24,027 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-02-21 16:09:24,029 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-02-21 16:09:24,034 INFO  L87              Difference]: Start difference. First operand 36 states. Second operand 3 states.
[2021-02-21 16:09:24,192 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-21 16:09:24,192 INFO  L93              Difference]: Finished difference Result 54 states and 77 transitions.
[2021-02-21 16:09:24,193 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-02-21 16:09:24,194 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 16
[2021-02-21 16:09:24,195 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-21 16:09:24,203 INFO  L225             Difference]: With dead ends: 54
[2021-02-21 16:09:24,203 INFO  L226             Difference]: Without dead ends: 27
[2021-02-21 16:09:24,207 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
[2021-02-21 16:09:24,226 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2021-02-21 16:09:24,245 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2021-02-21 16:09:24,247 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2021-02-21 16:09:24,248 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions.
[2021-02-21 16:09:24,250 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 16
[2021-02-21 16:09:24,250 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-02-21 16:09:24,251 INFO  L480      AbstractCegarLoop]: Abstraction has 27 states and 33 transitions.
[2021-02-21 16:09:24,251 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2021-02-21 16:09:24,251 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions.
[2021-02-21 16:09:24,252 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-02-21 16:09:24,252 INFO  L414         BasicCegarLoop]: Found error trace
[2021-02-21 16:09:24,252 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-21 16:09:24,253 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-21 16:09:24,253 INFO  L428      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-21 16:09:24,254 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-02-21 16:09:24,254 INFO  L82        PathProgramCache]: Analyzing trace with hash -1229893411, now seen corresponding path program 1 times
[2021-02-21 16:09:24,254 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-21 16:09:24,254 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294515735]
[2021-02-21 16:09:24,255 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-21 16:09:24,284 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 16:09:24,360 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:24,360 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:09:24,366 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:24,367 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-21 16:09:24,376 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:24,377 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-21 16:09:24,387 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:24,388 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:09:24,417 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-21 16:09:24,424 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 16:09:24,447 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:24,449 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:09:24,454 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-21 16:09:24,455 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294515735]
[2021-02-21 16:09:24,455 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-21 16:09:24,455 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-02-21 16:09:24,455 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676642693]
[2021-02-21 16:09:24,457 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-02-21 16:09:24,459 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-21 16:09:24,459 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-02-21 16:09:24,460 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-02-21 16:09:24,461 INFO  L87              Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 5 states.
[2021-02-21 16:09:24,594 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-21 16:09:24,595 INFO  L93              Difference]: Finished difference Result 44 states and 55 transitions.
[2021-02-21 16:09:24,595 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-02-21 16:09:24,595 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 18
[2021-02-21 16:09:24,596 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-21 16:09:24,597 INFO  L225             Difference]: With dead ends: 44
[2021-02-21 16:09:24,597 INFO  L226             Difference]: Without dead ends: 37
[2021-02-21 16:09:24,598 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
[2021-02-21 16:09:24,599 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2021-02-21 16:09:24,608 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32.
[2021-02-21 16:09:24,609 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2021-02-21 16:09:24,610 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions.
[2021-02-21 16:09:24,610 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 18
[2021-02-21 16:09:24,610 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-02-21 16:09:24,611 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 40 transitions.
[2021-02-21 16:09:24,611 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2021-02-21 16:09:24,611 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions.
[2021-02-21 16:09:24,612 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2021-02-21 16:09:24,612 INFO  L414         BasicCegarLoop]: Found error trace
[2021-02-21 16:09:24,612 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]
[2021-02-21 16:09:24,612 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-02-21 16:09:24,612 INFO  L428      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-21 16:09:24,616 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-02-21 16:09:24,616 INFO  L82        PathProgramCache]: Analyzing trace with hash -813235918, now seen corresponding path program 1 times
[2021-02-21 16:09:24,617 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-21 16:09:24,619 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990284948]
[2021-02-21 16:09:24,619 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-21 16:09:24,659 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 16:09:24,688 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:24,689 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:09:24,690 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:24,691 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-21 16:09:24,697 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:24,698 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-21 16:09:24,705 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:24,705 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:09:24,725 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-21 16:09:24,728 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 16:09:24,735 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:24,735 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:09:24,738 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-21 16:09:24,738 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990284948]
[2021-02-21 16:09:24,738 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-21 16:09:24,738 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-02-21 16:09:24,739 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053309468]
[2021-02-21 16:09:24,739 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-02-21 16:09:24,739 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-21 16:09:24,740 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-02-21 16:09:24,740 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-02-21 16:09:24,740 INFO  L87              Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 5 states.
[2021-02-21 16:09:24,839 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-21 16:09:24,839 INFO  L93              Difference]: Finished difference Result 51 states and 64 transitions.
[2021-02-21 16:09:24,840 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-02-21 16:09:24,840 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 20
[2021-02-21 16:09:24,840 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-21 16:09:24,843 INFO  L225             Difference]: With dead ends: 51
[2021-02-21 16:09:24,843 INFO  L226             Difference]: Without dead ends: 43
[2021-02-21 16:09:24,844 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
[2021-02-21 16:09:24,844 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2021-02-21 16:09:24,852 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41.
[2021-02-21 16:09:24,852 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 41 states.
[2021-02-21 16:09:24,853 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions.
[2021-02-21 16:09:24,853 INFO  L78                 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 20
[2021-02-21 16:09:24,854 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-02-21 16:09:24,854 INFO  L480      AbstractCegarLoop]: Abstraction has 41 states and 53 transitions.
[2021-02-21 16:09:24,854 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2021-02-21 16:09:24,854 INFO  L276                IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions.
[2021-02-21 16:09:24,855 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-02-21 16:09:24,855 INFO  L414         BasicCegarLoop]: Found error trace
[2021-02-21 16:09:24,855 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]
[2021-02-21 16:09:24,856 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-02-21 16:09:24,856 INFO  L428      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-21 16:09:24,856 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-02-21 16:09:24,856 INFO  L82        PathProgramCache]: Analyzing trace with hash 1469180370, now seen corresponding path program 1 times
[2021-02-21 16:09:24,857 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-21 16:09:24,857 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198691696]
[2021-02-21 16:09:24,857 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-21 16:09:24,879 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 16:09:24,949 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:24,950 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:09:24,951 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:24,952 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-21 16:09:24,958 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:24,958 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-21 16:09:24,963 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:24,964 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-21 16:09:24,970 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:24,970 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-21 16:09:24,976 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:24,977 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:09:24,997 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-21 16:09:25,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 16:09:25,006 WARN  L141       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 16:09:25,006 WARN  L147       QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 16:09:25,008 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-21 16:09:25,008 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198691696]
[2021-02-21 16:09:25,009 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-21 16:09:25,009 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-02-21 16:09:25,009 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087484591]
[2021-02-21 16:09:25,009 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-02-21 16:09:25,010 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-21 16:09:25,010 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-02-21 16:09:25,011 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2021-02-21 16:09:25,011 INFO  L87              Difference]: Start difference. First operand 41 states and 53 transitions. Second operand 7 states.
[2021-02-21 16:09:25,173 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-21 16:09:25,174 INFO  L93              Difference]: Finished difference Result 74 states and 98 transitions.
[2021-02-21 16:09:25,174 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-02-21 16:09:25,174 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 21
[2021-02-21 16:09:25,175 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-21 16:09:25,175 INFO  L225             Difference]: With dead ends: 74
[2021-02-21 16:09:25,176 INFO  L226             Difference]: Without dead ends: 47
[2021-02-21 16:09:25,177 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
[2021-02-21 16:09:25,177 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2021-02-21 16:09:25,183 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43.
[2021-02-21 16:09:25,184 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 43 states.
[2021-02-21 16:09:25,185 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions.
[2021-02-21 16:09:25,185 INFO  L78                 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 21
[2021-02-21 16:09:25,186 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-02-21 16:09:25,186 INFO  L480      AbstractCegarLoop]: Abstraction has 43 states and 55 transitions.
[2021-02-21 16:09:25,186 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2021-02-21 16:09:25,186 INFO  L276                IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions.
[2021-02-21 16:09:25,187 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2021-02-21 16:09:25,187 INFO  L414         BasicCegarLoop]: Found error trace
[2021-02-21 16:09:25,187 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]
[2021-02-21 16:09:25,188 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-02-21 16:09:25,188 INFO  L428      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-21 16:09:25,188 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-02-21 16:09:25,188 INFO  L82        PathProgramCache]: Analyzing trace with hash 914992199, now seen corresponding path program 1 times
[2021-02-21 16:09:25,189 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-21 16:09:25,189 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017752958]
[2021-02-21 16:09:25,189 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-21 16:09:25,250 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-21 16:09:25,250 INFO  L223             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-21 16:09:25,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-21 16:09:25,301 INFO  L223             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-21 16:09:25,350 INFO  L173   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-02-21 16:09:25,350 INFO  L523         BasicCegarLoop]: Counterexample might be feasible
[2021-02-21 16:09:25,350 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-02-21 16:09:25,424 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:09:25 BoogieIcfgContainer
[2021-02-21 16:09:25,424 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-21 16:09:25,427 INFO  L168              Benchmark]: Toolchain (without parser) took 3567.71 ms. Allocated memory is still 152.0 MB. Free memory was 127.0 MB in the beginning and 89.4 MB in the end (delta: 37.6 MB). Peak memory consumption was 38.5 MB. Max. memory is 8.0 GB.
[2021-02-21 16:09:25,432 INFO  L168              Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 152.0 MB. Free memory is still 129.3 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-21 16:09:25,433 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 674.00 ms. Allocated memory is still 152.0 MB. Free memory was 125.9 MB in the beginning and 103.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB.
[2021-02-21 16:09:25,434 INFO  L168              Benchmark]: Boogie Preprocessor took 73.66 ms. Allocated memory is still 152.0 MB. Free memory was 103.3 MB in the beginning and 100.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2021-02-21 16:09:25,436 INFO  L168              Benchmark]: RCFGBuilder took 962.86 ms. Allocated memory is still 152.0 MB. Free memory was 100.4 MB in the beginning and 56.1 MB in the end (delta: 44.3 MB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB.
[2021-02-21 16:09:25,438 INFO  L168              Benchmark]: TraceAbstraction took 1839.17 ms. Allocated memory is still 152.0 MB. Free memory was 55.7 MB in the beginning and 89.4 MB in the end (delta: -33.8 MB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-21 16:09:25,442 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.26 ms. Allocated memory is still 152.0 MB. Free memory is still 129.3 MB. There was no memory consumed. Max. memory is 8.0 GB.
 * CACSL2BoogieTranslator took 674.00 ms. Allocated memory is still 152.0 MB. Free memory was 125.9 MB in the beginning and 103.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB.
 * Boogie Preprocessor took 73.66 ms. Allocated memory is still 152.0 MB. Free memory was 103.3 MB in the beginning and 100.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
 * RCFGBuilder took 962.86 ms. Allocated memory is still 152.0 MB. Free memory was 100.4 MB in the beginning and 56.1 MB in the end (delta: 44.3 MB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB.
 * TraceAbstraction took 1839.17 ms. Allocated memory is still 152.0 MB. Free memory was 55.7 MB in the beginning and 89.4 MB in the end (delta: -33.8 MB). There was no memory consumed. 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))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}]
[L550]  COND FALSE  !(t == 0)
        VAL         [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, 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))={-1:0}, malloc(sizeof(struct node))={-2:0}, 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))={-1:0}, malloc(sizeof(struct node))={-2:0}, 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))={-1:0}, malloc(sizeof(struct node))={-2:0}, 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))={-1:0}, malloc(sizeof(struct node))={-2:0}, 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))={-1:0}, malloc(sizeof(struct node))={-2:0}, 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))={-1:0}, malloc(sizeof(struct node))={-2:0}, 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))={-1:0}, malloc(sizeof(struct node))={-2:0}, 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))={-1:0}, malloc(sizeof(struct node))={-2:0}, 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: 1.6s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.6s, 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, 0.2s 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...