/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i


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


This is Ultimate 0.2.0-b8ad66e
[2020-10-23 20:32:28,044 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-23 20:32:28,047 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-23 20:32:28,088 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-23 20:32:28,089 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-23 20:32:28,090 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-23 20:32:28,092 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-23 20:32:28,094 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-23 20:32:28,096 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-23 20:32:28,097 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-23 20:32:28,118 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-23 20:32:28,120 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-23 20:32:28,123 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-23 20:32:28,133 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-23 20:32:28,135 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-23 20:32:28,138 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-23 20:32:28,139 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-23 20:32:28,140 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-23 20:32:28,146 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-23 20:32:28,152 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-23 20:32:28,156 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-23 20:32:28,157 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-23 20:32:28,158 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-23 20:32:28,159 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-23 20:32:28,162 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-23 20:32:28,162 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-23 20:32:28,163 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-23 20:32:28,163 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-23 20:32:28,164 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-23 20:32:28,165 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-23 20:32:28,165 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-23 20:32:28,166 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-23 20:32:28,167 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-23 20:32:28,168 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-23 20:32:28,169 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-23 20:32:28,169 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-10-23 20:32:28,171 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-10-23 20:32:28,172 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-23 20:32:28,173 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-10-23 20:32:28,188 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-23 20:32:28,188 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-23 20:32:28,189 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-23 20:32:28,190 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-23 20:32:28,190 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-23 20:32:28,190 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-23 20:32:28,190 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-23 20:32:28,190 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-23 20:32:28,191 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-23 20:32:28,191 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-23 20:32:28,191 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-23 20:32:28,191 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-23 20:32:28,191 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-23 20:32:28,192 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-23 20:32:28,192 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-23 20:32:28,192 INFO  L138        SettingsManager]:  * Size of a code block=SingleStatement
[2020-10-23 20:32:28,192 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-23 20:32:28,192 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-23 20:32:28,193 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-23 20:32:28,193 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-23 20:32:28,193 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-10-23 20:32:28,193 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-23 20:32:28,193 INFO  L138        SettingsManager]:  * Use separate solver for trace checks=false
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-10-23 20:32:28,562 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-23 20:32:28,586 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-23 20:32:28,589 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-23 20:32:28,591 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-23 20:32:28,591 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-23 20:32:28,592 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i
[2020-10-23 20:32:28,668 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1d9c6919/3fce7f0fdbcd45ddb98e736fab027ba0/FLAG9045048d0
[2020-10-23 20:32:29,402 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-23 20:32:29,403 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i
[2020-10-23 20:32:29,421 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1d9c6919/3fce7f0fdbcd45ddb98e736fab027ba0/FLAG9045048d0
[2020-10-23 20:32:29,650 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1d9c6919/3fce7f0fdbcd45ddb98e736fab027ba0
[2020-10-23 20:32:29,653 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-23 20:32:29,661 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-23 20:32:29,664 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-23 20:32:29,664 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-23 20:32:29,668 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-23 20:32:29,669 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:32:29" (1/1) ...
[2020-10-23 20:32:29,673 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfd94db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:29, skipping insertion in model container
[2020-10-23 20:32:29,673 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:32:29" (1/1) ...
[2020-10-23 20:32:29,681 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-23 20:32:29,755 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-23 20:32:30,137 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-23 20:32:30,150 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-23 20:32:30,283 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-23 20:32:30,379 INFO  L208         MainTranslator]: Completed translation
[2020-10-23 20:32:30,379 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:30 WrapperNode
[2020-10-23 20:32:30,379 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-23 20:32:30,381 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-23 20:32:30,381 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-23 20:32:30,381 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-23 20:32:30,395 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:30" (1/1) ...
[2020-10-23 20:32:30,395 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:30" (1/1) ...
[2020-10-23 20:32:30,437 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:30" (1/1) ...
[2020-10-23 20:32:30,438 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:30" (1/1) ...
[2020-10-23 20:32:30,466 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:30" (1/1) ...
[2020-10-23 20:32:30,477 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:30" (1/1) ...
[2020-10-23 20:32:30,483 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:30" (1/1) ...
[2020-10-23 20:32:30,491 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-23 20:32:30,492 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-23 20:32:30,492 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-23 20:32:30,493 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-23 20:32:30,494 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:30" (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
[2020-10-23 20:32:30,569 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-23 20:32:30,569 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-23 20:32:30,570 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID
[2020-10-23 20:32:30,570 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-23 20:32:30,570 INFO  L138     BoogieDeclarations]: Found implementation of procedure __bswap_32
[2020-10-23 20:32:30,570 INFO  L138     BoogieDeclarations]: Found implementation of procedure __bswap_64
[2020-10-23 20:32:30,571 INFO  L138     BoogieDeclarations]: Found implementation of procedure fail
[2020-10-23 20:32:30,571 INFO  L138     BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave
[2020-10-23 20:32:30,571 INFO  L138     BoogieDeclarations]: Found implementation of procedure alloc_or_die_master
[2020-10-23 20:32:30,571 INFO  L138     BoogieDeclarations]: Found implementation of procedure dll_insert_slave
[2020-10-23 20:32:30,571 INFO  L138     BoogieDeclarations]: Found implementation of procedure dll_create_generic
[2020-10-23 20:32:30,572 INFO  L138     BoogieDeclarations]: Found implementation of procedure dll_create_slave
[2020-10-23 20:32:30,572 INFO  L138     BoogieDeclarations]: Found implementation of procedure dll_destroy_slave
[2020-10-23 20:32:30,572 INFO  L138     BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists
[2020-10-23 20:32:30,572 INFO  L138     BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists
[2020-10-23 20:32:30,572 INFO  L138     BoogieDeclarations]: Found implementation of procedure dll_destroy_master
[2020-10-23 20:32:30,573 INFO  L138     BoogieDeclarations]: Found implementation of procedure dll_insert_master
[2020-10-23 20:32:30,574 INFO  L138     BoogieDeclarations]: Found implementation of procedure dll_create_master
[2020-10-23 20:32:30,574 INFO  L138     BoogieDeclarations]: Found implementation of procedure inspect_base
[2020-10-23 20:32:30,574 INFO  L138     BoogieDeclarations]: Found implementation of procedure inspect_full
[2020-10-23 20:32:30,575 INFO  L138     BoogieDeclarations]: Found implementation of procedure inspect_dangling
[2020-10-23 20:32:30,576 INFO  L138     BoogieDeclarations]: Found implementation of procedure inspect_init
[2020-10-23 20:32:30,578 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-23 20:32:30,579 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-23 20:32:30,579 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-23 20:32:30,579 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2020-10-23 20:32:30,580 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert
[2020-10-23 20:32:30,580 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-23 20:32:30,580 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-23 20:32:30,580 INFO  L130     BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2020-10-23 20:32:30,580 INFO  L130     BoogieDeclarations]: Found specification of procedure atof
[2020-10-23 20:32:30,581 INFO  L130     BoogieDeclarations]: Found specification of procedure atoi
[2020-10-23 20:32:30,581 INFO  L130     BoogieDeclarations]: Found specification of procedure atol
[2020-10-23 20:32:30,581 INFO  L130     BoogieDeclarations]: Found specification of procedure atoll
[2020-10-23 20:32:30,581 INFO  L130     BoogieDeclarations]: Found specification of procedure strtod
[2020-10-23 20:32:30,581 INFO  L130     BoogieDeclarations]: Found specification of procedure strtof
[2020-10-23 20:32:30,581 INFO  L130     BoogieDeclarations]: Found specification of procedure strtold
[2020-10-23 20:32:30,582 INFO  L130     BoogieDeclarations]: Found specification of procedure strtol
[2020-10-23 20:32:30,582 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoul
[2020-10-23 20:32:30,582 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoq
[2020-10-23 20:32:30,582 INFO  L130     BoogieDeclarations]: Found specification of procedure strtouq
[2020-10-23 20:32:30,582 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoll
[2020-10-23 20:32:30,582 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoull
[2020-10-23 20:32:30,582 INFO  L130     BoogieDeclarations]: Found specification of procedure l64a
[2020-10-23 20:32:30,583 INFO  L130     BoogieDeclarations]: Found specification of procedure a64l
[2020-10-23 20:32:30,583 INFO  L130     BoogieDeclarations]: Found specification of procedure __bswap_32
[2020-10-23 20:32:30,583 INFO  L130     BoogieDeclarations]: Found specification of procedure __bswap_64
[2020-10-23 20:32:30,583 INFO  L130     BoogieDeclarations]: Found specification of procedure select
[2020-10-23 20:32:30,583 INFO  L130     BoogieDeclarations]: Found specification of procedure pselect
[2020-10-23 20:32:30,583 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2020-10-23 20:32:30,584 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2020-10-23 20:32:30,584 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2020-10-23 20:32:30,584 INFO  L130     BoogieDeclarations]: Found specification of procedure random
[2020-10-23 20:32:30,584 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom
[2020-10-23 20:32:30,584 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate
[2020-10-23 20:32:30,584 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate
[2020-10-23 20:32:30,584 INFO  L130     BoogieDeclarations]: Found specification of procedure random_r
[2020-10-23 20:32:30,585 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom_r
[2020-10-23 20:32:30,585 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate_r
[2020-10-23 20:32:30,585 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate_r
[2020-10-23 20:32:30,586 INFO  L130     BoogieDeclarations]: Found specification of procedure rand
[2020-10-23 20:32:30,586 INFO  L130     BoogieDeclarations]: Found specification of procedure srand
[2020-10-23 20:32:30,587 INFO  L130     BoogieDeclarations]: Found specification of procedure rand_r
[2020-10-23 20:32:30,587 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48
[2020-10-23 20:32:30,587 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48
[2020-10-23 20:32:30,587 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48
[2020-10-23 20:32:30,587 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48
[2020-10-23 20:32:30,588 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48
[2020-10-23 20:32:30,588 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48
[2020-10-23 20:32:30,588 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48
[2020-10-23 20:32:30,588 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48
[2020-10-23 20:32:30,588 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48
[2020-10-23 20:32:30,589 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48_r
[2020-10-23 20:32:30,589 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48_r
[2020-10-23 20:32:30,589 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48_r
[2020-10-23 20:32:30,589 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48_r
[2020-10-23 20:32:30,590 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48_r
[2020-10-23 20:32:30,590 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48_r
[2020-10-23 20:32:30,590 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48_r
[2020-10-23 20:32:30,590 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48_r
[2020-10-23 20:32:30,591 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48_r
[2020-10-23 20:32:30,591 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-10-23 20:32:30,591 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2020-10-23 20:32:30,591 INFO  L130     BoogieDeclarations]: Found specification of procedure realloc
[2020-10-23 20:32:30,592 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-10-23 20:32:30,592 INFO  L130     BoogieDeclarations]: Found specification of procedure cfree
[2020-10-23 20:32:30,592 INFO  L130     BoogieDeclarations]: Found specification of procedure alloca
[2020-10-23 20:32:30,593 INFO  L130     BoogieDeclarations]: Found specification of procedure valloc
[2020-10-23 20:32:30,593 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_memalign
[2020-10-23 20:32:30,594 INFO  L130     BoogieDeclarations]: Found specification of procedure aligned_alloc
[2020-10-23 20:32:30,594 INFO  L130     BoogieDeclarations]: Found specification of procedure atexit
[2020-10-23 20:32:30,594 INFO  L130     BoogieDeclarations]: Found specification of procedure at_quick_exit
[2020-10-23 20:32:30,595 INFO  L130     BoogieDeclarations]: Found specification of procedure on_exit
[2020-10-23 20:32:30,595 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-23 20:32:30,596 INFO  L130     BoogieDeclarations]: Found specification of procedure quick_exit
[2020-10-23 20:32:30,596 INFO  L130     BoogieDeclarations]: Found specification of procedure _Exit
[2020-10-23 20:32:30,596 INFO  L130     BoogieDeclarations]: Found specification of procedure getenv
[2020-10-23 20:32:30,596 INFO  L130     BoogieDeclarations]: Found specification of procedure putenv
[2020-10-23 20:32:30,597 INFO  L130     BoogieDeclarations]: Found specification of procedure setenv
[2020-10-23 20:32:30,597 INFO  L130     BoogieDeclarations]: Found specification of procedure unsetenv
[2020-10-23 20:32:30,597 INFO  L130     BoogieDeclarations]: Found specification of procedure clearenv
[2020-10-23 20:32:30,597 INFO  L130     BoogieDeclarations]: Found specification of procedure mktemp
[2020-10-23 20:32:30,597 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemp
[2020-10-23 20:32:30,597 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemps
[2020-10-23 20:32:30,597 INFO  L130     BoogieDeclarations]: Found specification of procedure mkdtemp
[2020-10-23 20:32:30,598 INFO  L130     BoogieDeclarations]: Found specification of procedure system
[2020-10-23 20:32:30,598 INFO  L130     BoogieDeclarations]: Found specification of procedure realpath
[2020-10-23 20:32:30,598 INFO  L130     BoogieDeclarations]: Found specification of procedure bsearch
[2020-10-23 20:32:30,598 INFO  L130     BoogieDeclarations]: Found specification of procedure qsort
[2020-10-23 20:32:30,598 INFO  L130     BoogieDeclarations]: Found specification of procedure abs
[2020-10-23 20:32:30,598 INFO  L130     BoogieDeclarations]: Found specification of procedure labs
[2020-10-23 20:32:30,599 INFO  L130     BoogieDeclarations]: Found specification of procedure llabs
[2020-10-23 20:32:30,599 INFO  L130     BoogieDeclarations]: Found specification of procedure div
[2020-10-23 20:32:30,599 INFO  L130     BoogieDeclarations]: Found specification of procedure ldiv
[2020-10-23 20:32:30,599 INFO  L130     BoogieDeclarations]: Found specification of procedure lldiv
[2020-10-23 20:32:30,599 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt
[2020-10-23 20:32:30,599 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt
[2020-10-23 20:32:30,600 INFO  L130     BoogieDeclarations]: Found specification of procedure gcvt
[2020-10-23 20:32:30,600 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt
[2020-10-23 20:32:30,600 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt
[2020-10-23 20:32:30,600 INFO  L130     BoogieDeclarations]: Found specification of procedure qgcvt
[2020-10-23 20:32:30,600 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt_r
[2020-10-23 20:32:30,600 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt_r
[2020-10-23 20:32:30,601 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt_r
[2020-10-23 20:32:30,601 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt_r
[2020-10-23 20:32:30,601 INFO  L130     BoogieDeclarations]: Found specification of procedure mblen
[2020-10-23 20:32:30,602 INFO  L130     BoogieDeclarations]: Found specification of procedure mbtowc
[2020-10-23 20:32:30,602 INFO  L130     BoogieDeclarations]: Found specification of procedure wctomb
[2020-10-23 20:32:30,602 INFO  L130     BoogieDeclarations]: Found specification of procedure mbstowcs
[2020-10-23 20:32:30,602 INFO  L130     BoogieDeclarations]: Found specification of procedure wcstombs
[2020-10-23 20:32:30,602 INFO  L130     BoogieDeclarations]: Found specification of procedure rpmatch
[2020-10-23 20:32:30,602 INFO  L130     BoogieDeclarations]: Found specification of procedure getsubopt
[2020-10-23 20:32:30,603 INFO  L130     BoogieDeclarations]: Found specification of procedure getloadavg
[2020-10-23 20:32:30,603 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-23 20:32:30,603 INFO  L130     BoogieDeclarations]: Found specification of procedure fail
[2020-10-23 20:32:30,603 INFO  L130     BoogieDeclarations]: Found specification of procedure alloc_or_die_slave
[2020-10-23 20:32:30,604 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-10-23 20:32:30,604 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-10-23 20:32:30,604 INFO  L130     BoogieDeclarations]: Found specification of procedure alloc_or_die_master
[2020-10-23 20:32:30,604 INFO  L130     BoogieDeclarations]: Found specification of procedure dll_insert_slave
[2020-10-23 20:32:30,604 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-10-23 20:32:30,605 INFO  L130     BoogieDeclarations]: Found specification of procedure dll_create_generic
[2020-10-23 20:32:30,605 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID
[2020-10-23 20:32:30,605 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2020-10-23 20:32:30,606 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-23 20:32:30,607 INFO  L130     BoogieDeclarations]: Found specification of procedure dll_create_slave
[2020-10-23 20:32:30,611 INFO  L130     BoogieDeclarations]: Found specification of procedure dll_destroy_slave
[2020-10-23 20:32:30,612 INFO  L130     BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists
[2020-10-23 20:32:30,612 INFO  L130     BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists
[2020-10-23 20:32:30,613 INFO  L130     BoogieDeclarations]: Found specification of procedure dll_destroy_master
[2020-10-23 20:32:30,616 INFO  L130     BoogieDeclarations]: Found specification of procedure dll_insert_master
[2020-10-23 20:32:30,617 INFO  L130     BoogieDeclarations]: Found specification of procedure dll_create_master
[2020-10-23 20:32:30,617 INFO  L130     BoogieDeclarations]: Found specification of procedure inspect_base
[2020-10-23 20:32:30,617 INFO  L130     BoogieDeclarations]: Found specification of procedure inspect_full
[2020-10-23 20:32:30,618 INFO  L130     BoogieDeclarations]: Found specification of procedure inspect_dangling
[2020-10-23 20:32:30,618 INFO  L130     BoogieDeclarations]: Found specification of procedure inspect_init
[2020-10-23 20:32:30,618 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-23 20:32:30,618 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-23 20:32:30,619 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-23 20:32:30,619 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-23 20:32:30,619 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-23 20:32:30,619 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-23 20:32:31,780 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-23 20:32:31,780 INFO  L298             CfgBuilder]: Removed 38 assume(true) statements.
[2020-10-23 20:32:31,783 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:32:31 BoogieIcfgContainer
[2020-10-23 20:32:31,783 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-23 20:32:31,787 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-23 20:32:31,788 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-23 20:32:31,793 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-23 20:32:31,793 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:32:29" (1/3) ...
[2020-10-23 20:32:31,797 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd74d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:32:31, skipping insertion in model container
[2020-10-23 20:32:31,797 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:30" (2/3) ...
[2020-10-23 20:32:31,798 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd74d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:32:31, skipping insertion in model container
[2020-10-23 20:32:31,798 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:32:31" (3/3) ...
[2020-10-23 20:32:31,802 INFO  L111   eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i
[2020-10-23 20:32:31,820 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-23 20:32:31,827 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-23 20:32:31,842 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-23 20:32:31,867 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-23 20:32:31,868 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-23 20:32:31,868 INFO  L379      AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2020-10-23 20:32:31,868 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-23 20:32:31,868 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-23 20:32:31,868 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-23 20:32:31,868 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-23 20:32:31,869 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-23 20:32:31,893 INFO  L276                IsEmpty]: Start isEmpty. Operand 286 states.
[2020-10-23 20:32:31,908 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 92
[2020-10-23 20:32:31,908 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-23 20:32:31,909 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 20:32:31,910 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 20:32:31,921 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 20:32:31,921 INFO  L82        PathProgramCache]: Analyzing trace with hash 460633146, now seen corresponding path program 1 times
[2020-10-23 20:32:31,943 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-23 20:32:31,943 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944530793]
[2020-10-23 20:32:31,943 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 20:32:32,054 INFO  L321   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-10-23 20:32:32,211 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:32,397 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 20:32:32,405 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:32,462 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-10-23 20:32:32,531 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:32,551 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 20:32:32,576 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:32,602 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 20:32:32,606 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:32,619 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-23 20:32:32,623 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:32,634 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-10-23 20:32:32,636 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:32,651 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29
[2020-10-23 20:32:32,655 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:32,679 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-23 20:32:32,687 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:32,707 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-10-23 20:32:32,715 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:32,778 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2020-10-23 20:32:32,780 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944530793]
[2020-10-23 20:32:32,782 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 20:32:32,783 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-23 20:32:32,784 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083891804]
[2020-10-23 20:32:32,791 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-23 20:32:32,792 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-23 20:32:32,805 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-23 20:32:32,806 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-23 20:32:32,808 INFO  L87              Difference]: Start difference. First operand 286 states. Second operand 4 states.
[2020-10-23 20:32:33,718 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 20:32:33,719 INFO  L93              Difference]: Finished difference Result 580 states and 782 transitions.
[2020-10-23 20:32:33,719 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-23 20:32:33,721 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 91
[2020-10-23 20:32:33,722 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 20:32:33,735 INFO  L225             Difference]: With dead ends: 580
[2020-10-23 20:32:33,735 INFO  L226             Difference]: Without dead ends: 281
[2020-10-23 20:32:33,743 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-23 20:32:33,762 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 281 states.
[2020-10-23 20:32:33,825 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 261.
[2020-10-23 20:32:33,826 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 261 states.
[2020-10-23 20:32:33,829 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 290 transitions.
[2020-10-23 20:32:33,831 INFO  L78                 Accepts]: Start accepts. Automaton has 261 states and 290 transitions. Word has length 91
[2020-10-23 20:32:33,831 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-23 20:32:33,832 INFO  L481      AbstractCegarLoop]: Abstraction has 261 states and 290 transitions.
[2020-10-23 20:32:33,832 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-23 20:32:33,832 INFO  L276                IsEmpty]: Start isEmpty. Operand 261 states and 290 transitions.
[2020-10-23 20:32:33,836 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 94
[2020-10-23 20:32:33,836 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-23 20:32:33,837 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 20:32:33,837 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-23 20:32:33,837 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 20:32:33,838 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 20:32:33,838 INFO  L82        PathProgramCache]: Analyzing trace with hash -409331855, now seen corresponding path program 1 times
[2020-10-23 20:32:33,838 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-23 20:32:33,839 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698217859]
[2020-10-23 20:32:33,839 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 20:32:33,849 INFO  L321   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-10-23 20:32:33,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:34,077 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 20:32:34,080 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:34,123 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-10-23 20:32:34,160 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:34,215 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 20:32:34,246 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:34,337 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 20:32:34,346 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:34,395 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-23 20:32:34,401 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:34,409 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-10-23 20:32:34,410 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:34,416 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29
[2020-10-23 20:32:34,422 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:34,429 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-23 20:32:34,432 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:34,438 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-10-23 20:32:34,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:32:34,490 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2020-10-23 20:32:34,490 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698217859]
[2020-10-23 20:32:34,491 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 20:32:34,491 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2020-10-23 20:32:34,491 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179217946]
[2020-10-23 20:32:34,492 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-23 20:32:34,492 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-23 20:32:34,493 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-23 20:32:34,493 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156
[2020-10-23 20:32:34,494 INFO  L87              Difference]: Start difference. First operand 261 states and 290 transitions. Second operand 13 states.
[2020-10-23 20:32:37,697 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 20:32:37,698 INFO  L93              Difference]: Finished difference Result 550 states and 629 transitions.
[2020-10-23 20:32:37,699 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-23 20:32:37,699 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 93
[2020-10-23 20:32:37,699 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 20:32:37,705 INFO  L225             Difference]: With dead ends: 550
[2020-10-23 20:32:37,706 INFO  L226             Difference]: Without dead ends: 302
[2020-10-23 20:32:37,709 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342
[2020-10-23 20:32:37,710 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 302 states.
[2020-10-23 20:32:37,784 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 282.
[2020-10-23 20:32:37,784 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 282 states.
[2020-10-23 20:32:37,786 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 313 transitions.
[2020-10-23 20:32:37,788 INFO  L78                 Accepts]: Start accepts. Automaton has 282 states and 313 transitions. Word has length 93
[2020-10-23 20:32:37,790 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-23 20:32:37,791 INFO  L481      AbstractCegarLoop]: Abstraction has 282 states and 313 transitions.
[2020-10-23 20:32:37,791 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-23 20:32:37,791 INFO  L276                IsEmpty]: Start isEmpty. Operand 282 states and 313 transitions.
[2020-10-23 20:32:37,804 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 242
[2020-10-23 20:32:37,804 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-23 20:32:37,808 INFO  L422         BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 20:32:37,808 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-23 20:32:37,808 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 20:32:37,808 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 20:32:37,809 INFO  L82        PathProgramCache]: Analyzing trace with hash 1433981389, now seen corresponding path program 1 times
[2020-10-23 20:32:37,809 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-23 20:32:37,809 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049178096]
[2020-10-23 20:32:37,809 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 20:32:37,897 FATAL L?                        ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception:
java.lang.NullPointerException
	at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119)
	at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266)
	at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.<init>(AcceleratedInterpolation.java:227)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:84)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:74)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:134)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[2020-10-23 20:32:37,902 INFO  L168              Benchmark]: Toolchain (without parser) took 8244.75 ms. Allocated memory was 151.0 MB in the beginning and 219.2 MB in the end (delta: 68.2 MB). Free memory was 106.1 MB in the beginning and 153.9 MB in the end (delta: -47.8 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB.
[2020-10-23 20:32:37,902 INFO  L168              Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-23 20:32:37,904 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 715.94 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 120.0 MB in the end (delta: -14.5 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB.
[2020-10-23 20:32:37,905 INFO  L168              Benchmark]: Boogie Preprocessor took 110.81 ms. Allocated memory is still 151.0 MB. Free memory was 120.0 MB in the beginning and 115.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB.
[2020-10-23 20:32:37,906 INFO  L168              Benchmark]: RCFGBuilder took 1290.58 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 87.5 MB in the end (delta: 28.4 MB). Peak memory consumption was 44.6 MB. Max. memory is 8.0 GB.
[2020-10-23 20:32:37,907 INFO  L168              Benchmark]: TraceAbstraction took 6111.81 ms. Allocated memory was 151.0 MB in the beginning and 219.2 MB in the end (delta: 68.2 MB). Free memory was 87.5 MB in the beginning and 153.9 MB in the end (delta: -66.4 MB). Peak memory consumption was 2.2 MB. Max. memory is 8.0 GB.
[2020-10-23 20:32:37,911 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB.
 * CACSL2BoogieTranslator took 715.94 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 120.0 MB in the end (delta: -14.5 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB.
 * Boogie Preprocessor took 110.81 ms. Allocated memory is still 151.0 MB. Free memory was 120.0 MB in the beginning and 115.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB.
 * RCFGBuilder took 1290.58 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 87.5 MB in the end (delta: 28.4 MB). Peak memory consumption was 44.6 MB. Max. memory is 8.0 GB.
 * TraceAbstraction took 6111.81 ms. Allocated memory was 151.0 MB in the beginning and 219.2 MB in the end (delta: 68.2 MB). Free memory was 87.5 MB in the beginning and 153.9 MB in the end (delta: -66.4 MB). Peak memory consumption was 2.2 MB. Max. memory is 8.0 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - ExceptionOrErrorResult: NullPointerException: null
    de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...