/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/list-ext-properties/list-ext.i
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-36cd7be
[2021-02-24 04:25:57,292 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-02-24 04:25:57,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-02-24 04:25:57,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-02-24 04:25:57,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-24 04:25:57,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-02-24 04:25:57,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-02-24 04:25:57,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-02-24 04:25:57,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-02-24 04:25:57,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-02-24 04:25:57,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-02-24 04:25:57,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-02-24 04:25:57,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-02-24 04:25:57,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-02-24 04:25:57,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-02-24 04:25:57,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-24 04:25:57,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-24 04:25:57,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-24 04:25:57,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-24 04:25:57,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-02-24 04:25:57,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-24 04:25:57,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-24 04:25:57,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-02-24 04:25:57,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-02-24 04:25:57,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-02-24 04:25:57,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-02-24 04:25:57,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-02-24 04:25:57,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-02-24 04:25:57,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-02-24 04:25:57,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-02-24 04:25:57,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-02-24 04:25:57,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-02-24 04:25:57,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-02-24 04:25:57,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-02-24 04:25:57,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-02-24 04:25:57,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-02-24 04:25:57,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-02-24 04:25:57,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-02-24 04:25:57,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-02-24 04:25:57,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-02-24 04:25:57,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-02-24 04:25:57,478 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf
[2021-02-24 04:25:57,506 INFO L113 SettingsManager]: Loading preferences was successful
[2021-02-24 04:25:57,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-24 04:25:57,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-24 04:25:57,512 INFO L138 SettingsManager]: * sizeof long=4
[2021-02-24 04:25:57,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-02-24 04:25:57,513 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-02-24 04:25:57,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-02-24 04:25:57,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-02-24 04:25:57,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-24 04:25:57,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-02-24 04:25:57,515 INFO L138 SettingsManager]: * sizeof long double=12
[2021-02-24 04:25:57,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-02-24 04:25:57,516 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-02-24 04:25:57,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-02-24 04:25:57,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-24 04:25:57,517 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2021-02-24 04:25:57,517 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-02-24 04:25:57,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-02-24 04:25:57,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-24 04:25:57,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-24 04:25:57,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-02-24 04:25:57,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-24 04:25:57,519 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX
[2021-02-24 04:25:57,519 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-24 04:25:57,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-24 04:25:57,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-24 04:25:57,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-24 04:25:58,000 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-02-24 04:25:58,001 INFO L275 PluginConnector]: CDTParser initialized
[2021-02-24 04:25:58,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/list-ext.i
[2021-02-24 04:25:58,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d1cb641/62838a6d1df04306b1fe7e329b5784bf/FLAG659d6242d
[2021-02-24 04:25:58,855 INFO L306 CDTParser]: Found 1 translation units.
[2021-02-24 04:25:58,856 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext-properties/list-ext.i
[2021-02-24 04:25:58,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d1cb641/62838a6d1df04306b1fe7e329b5784bf/FLAG659d6242d
[2021-02-24 04:25:59,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d1cb641/62838a6d1df04306b1fe7e329b5784bf
[2021-02-24 04:25:59,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-24 04:25:59,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-24 04:25:59,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-24 04:25:59,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-24 04:25:59,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-24 04:25:59,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:25:59" (1/1) ...
[2021-02-24 04:25:59,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8b0512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:59, skipping insertion in model container
[2021-02-24 04:25:59,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:25:59" (1/1) ...
[2021-02-24 04:25:59,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-02-24 04:25:59,244 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-02-24 04:25:59,570 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-ext-properties/list-ext.i[23551,23564]
[2021-02-24 04:25:59,577 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-24 04:25:59,594 INFO L203 MainTranslator]: Completed pre-run
[2021-02-24 04:25:59,682 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-ext-properties/list-ext.i[23551,23564]
[2021-02-24 04:25:59,685 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-24 04:25:59,745 INFO L208 MainTranslator]: Completed translation
[2021-02-24 04:25:59,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:59 WrapperNode
[2021-02-24 04:25:59,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-24 04:25:59,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-24 04:25:59,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-24 04:25:59,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-02-24 04:25:59,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:59" (1/1) ...
[2021-02-24 04:25:59,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:59" (1/1) ...
[2021-02-24 04:25:59,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:59" (1/1) ...
[2021-02-24 04:25:59,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:59" (1/1) ...
[2021-02-24 04:25:59,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:59" (1/1) ...
[2021-02-24 04:25:59,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:59" (1/1) ...
[2021-02-24 04:25:59,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:59" (1/1) ...
[2021-02-24 04:25:59,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-24 04:25:59,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-24 04:25:59,841 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-02-24 04:25:59,842 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-02-24 04:25:59,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:59" (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
[2021-02-24 04:25:59,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-24 04:25:59,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-24 04:25:59,937 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-24 04:25:59,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32
[2021-02-24 04:25:59,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64
[2021-02-24 04:25:59,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity
[2021-02-24 04:25:59,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity
[2021-02-24 04:25:59,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity
[2021-02-24 04:25:59,938 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit
[2021-02-24 04:25:59,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-02-24 04:25:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-02-24 04:25:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-24 04:25:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2021-02-24 04:25:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure __assert
[2021-02-24 04:25:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-24 04:25:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-24 04:25:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-02-24 04:25:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2021-02-24 04:25:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure atof
[2021-02-24 04:25:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure atoi
[2021-02-24 04:25:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure atol
[2021-02-24 04:25:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure atoll
[2021-02-24 04:25:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure strtod
[2021-02-24 04:25:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure strtof
[2021-02-24 04:25:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure strtold
[2021-02-24 04:25:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure strtol
[2021-02-24 04:25:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul
[2021-02-24 04:25:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq
[2021-02-24 04:25:59,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq
[2021-02-24 04:25:59,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll
[2021-02-24 04:25:59,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull
[2021-02-24 04:25:59,943 INFO L130 BoogieDeclarations]: Found specification of procedure l64a
[2021-02-24 04:25:59,943 INFO L130 BoogieDeclarations]: Found specification of procedure a64l
[2021-02-24 04:25:59,943 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32
[2021-02-24 04:25:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64
[2021-02-24 04:25:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity
[2021-02-24 04:25:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity
[2021-02-24 04:25:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity
[2021-02-24 04:25:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure select
[2021-02-24 04:25:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure pselect
[2021-02-24 04:25:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2021-02-24 04:25:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2021-02-24 04:25:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2021-02-24 04:25:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure random
[2021-02-24 04:25:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure srandom
[2021-02-24 04:25:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure initstate
[2021-02-24 04:25:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure setstate
[2021-02-24 04:25:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure random_r
[2021-02-24 04:25:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r
[2021-02-24 04:25:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r
[2021-02-24 04:25:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r
[2021-02-24 04:25:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure rand
[2021-02-24 04:25:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure srand
[2021-02-24 04:25:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r
[2021-02-24 04:25:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure drand48
[2021-02-24 04:25:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure erand48
[2021-02-24 04:25:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48
[2021-02-24 04:25:59,948 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48
[2021-02-24 04:25:59,948 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48
[2021-02-24 04:25:59,948 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48
[2021-02-24 04:25:59,948 INFO L130 BoogieDeclarations]: Found specification of procedure srand48
[2021-02-24 04:25:59,948 INFO L130 BoogieDeclarations]: Found specification of procedure seed48
[2021-02-24 04:25:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48
[2021-02-24 04:25:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r
[2021-02-24 04:25:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r
[2021-02-24 04:25:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r
[2021-02-24 04:25:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r
[2021-02-24 04:25:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r
[2021-02-24 04:25:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r
[2021-02-24 04:25:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r
[2021-02-24 04:25:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r
[2021-02-24 04:25:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r
[2021-02-24 04:25:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2021-02-24 04:25:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure calloc
[2021-02-24 04:25:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure realloc
[2021-02-24 04:25:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure free
[2021-02-24 04:25:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure alloca
[2021-02-24 04:25:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure valloc
[2021-02-24 04:25:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign
[2021-02-24 04:25:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc
[2021-02-24 04:25:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure atexit
[2021-02-24 04:25:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit
[2021-02-24 04:25:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit
[2021-02-24 04:25:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure exit
[2021-02-24 04:25:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit
[2021-02-24 04:25:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit
[2021-02-24 04:25:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure getenv
[2021-02-24 04:25:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure putenv
[2021-02-24 04:25:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure setenv
[2021-02-24 04:25:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv
[2021-02-24 04:25:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv
[2021-02-24 04:25:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp
[2021-02-24 04:25:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp
[2021-02-24 04:25:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps
[2021-02-24 04:25:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp
[2021-02-24 04:25:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure system
[2021-02-24 04:25:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure realpath
[2021-02-24 04:25:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch
[2021-02-24 04:25:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure qsort
[2021-02-24 04:25:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure abs
[2021-02-24 04:25:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure labs
[2021-02-24 04:25:59,955 INFO L130 BoogieDeclarations]: Found specification of procedure llabs
[2021-02-24 04:25:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure div
[2021-02-24 04:25:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv
[2021-02-24 04:25:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv
[2021-02-24 04:25:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt
[2021-02-24 04:25:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt
[2021-02-24 04:25:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt
[2021-02-24 04:25:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt
[2021-02-24 04:25:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt
[2021-02-24 04:25:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt
[2021-02-24 04:25:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r
[2021-02-24 04:25:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r
[2021-02-24 04:25:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r
[2021-02-24 04:25:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r
[2021-02-24 04:25:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure mblen
[2021-02-24 04:25:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc
[2021-02-24 04:25:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb
[2021-02-24 04:25:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs
[2021-02-24 04:25:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs
[2021-02-24 04:25:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch
[2021-02-24 04:25:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt
[2021-02-24 04:25:59,958 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg
[2021-02-24 04:25:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure myexit
[2021-02-24 04:25:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-02-24 04:25:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2021-02-24 04:25:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-02-24 04:25:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2021-02-24 04:25:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2021-02-24 04:25:59,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-02-24 04:25:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-24 04:25:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-24 04:25:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-24 04:25:59,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-24 04:26:00,627 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true;
[2021-02-24 04:26:01,033 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-24 04:26:01,034 INFO L299 CfgBuilder]: Removed 5 assume(true) statements.
[2021-02-24 04:26:01,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:26:01 BoogieIcfgContainer
[2021-02-24 04:26:01,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-24 04:26:01,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-24 04:26:01,038 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-02-24 04:26:01,042 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-02-24 04:26:01,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:25:59" (1/3) ...
[2021-02-24 04:26:01,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5675b651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:26:01, skipping insertion in model container
[2021-02-24 04:26:01,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:59" (2/3) ...
[2021-02-24 04:26:01,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5675b651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:26:01, skipping insertion in model container
[2021-02-24 04:26:01,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:26:01" (3/3) ...
[2021-02-24 04:26:01,046 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i
[2021-02-24 04:26:01,053 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-02-24 04:26:01,059 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-24 04:26:01,077 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-24 04:26:01,100 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-02-24 04:26:01,100 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-02-24 04:26:01,100 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-02-24 04:26:01,101 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-24 04:26:01,101 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-24 04:26:01,101 INFO L381 AbstractCegarLoop]: Difference is false
[2021-02-24 04:26:01,101 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-24 04:26:01,101 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-24 04:26:01,118 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states.
[2021-02-24 04:26:01,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2021-02-24 04:26:01,130 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-24 04:26:01,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-24 04:26:01,132 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-24 04:26:01,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-24 04:26:01,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1661107889, now seen corresponding path program 1 times
[2021-02-24 04:26:01,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-24 04:26:01,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273177679]
[2021-02-24 04:26:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-24 04:26:01,235 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-24 04:26:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 04:26:01,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:26:01,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:26:01,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:26:01,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:26:01,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-24 04:26:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 04:26:01,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:26:01,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:26:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-24 04:26:01,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273177679]
[2021-02-24 04:26:01,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-24 04:26:01,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-02-24 04:26:01,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991119867]
[2021-02-24 04:26:01,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-02-24 04:26:01,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-24 04:26:01,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-02-24 04:26:01,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-02-24 04:26:01,497 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 3 states.
[2021-02-24 04:26:01,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-24 04:26:01,737 INFO L93 Difference]: Finished difference Result 181 states and 206 transitions.
[2021-02-24 04:26:01,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-02-24 04:26:01,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31
[2021-02-24 04:26:01,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-24 04:26:01,748 INFO L225 Difference]: With dead ends: 181
[2021-02-24 04:26:01,748 INFO L226 Difference]: Without dead ends: 88
[2021-02-24 04:26:01,752 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
[2021-02-24 04:26:01,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states.
[2021-02-24 04:26:01,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88.
[2021-02-24 04:26:01,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states.
[2021-02-24 04:26:01,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions.
[2021-02-24 04:26:01,805 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 31
[2021-02-24 04:26:01,806 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-24 04:26:01,806 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions.
[2021-02-24 04:26:01,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2021-02-24 04:26:01,806 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions.
[2021-02-24 04:26:01,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2021-02-24 04:26:01,809 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-24 04:26:01,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-24 04:26:01,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-24 04:26:01,810 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-24 04:26:01,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-24 04:26:01,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1409643793, now seen corresponding path program 1 times
[2021-02-24 04:26:01,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-24 04:26:01,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389643809]
[2021-02-24 04:26:01,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-24 04:26:01,821 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-24 04:26:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 04:26:01,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:26:01,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:26:01,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:26:01,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-24 04:26:01,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:26:01,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:26:01,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:26:01,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:26:01,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-24 04:26:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 04:26:02,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:26:02,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:26:02,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-24 04:26:02,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389643809]
[2021-02-24 04:26:02,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-24 04:26:02,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-02-24 04:26:02,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445928696]
[2021-02-24 04:26:02,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-02-24 04:26:02,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-24 04:26:02,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-02-24 04:26:02,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-02-24 04:26:02,050 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 5 states.
[2021-02-24 04:26:02,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-24 04:26:02,338 INFO L93 Difference]: Finished difference Result 213 states and 228 transitions.
[2021-02-24 04:26:02,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-02-24 04:26:02,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43
[2021-02-24 04:26:02,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-24 04:26:02,341 INFO L225 Difference]: With dead ends: 213
[2021-02-24 04:26:02,341 INFO L226 Difference]: Without dead ends: 143
[2021-02-24 04:26:02,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2021-02-24 04:26:02,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states.
[2021-02-24 04:26:02,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 90.
[2021-02-24 04:26:02,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states.
[2021-02-24 04:26:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions.
[2021-02-24 04:26:02,358 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 43
[2021-02-24 04:26:02,358 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-24 04:26:02,359 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions.
[2021-02-24 04:26:02,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2021-02-24 04:26:02,359 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions.
[2021-02-24 04:26:02,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2021-02-24 04:26:02,360 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-24 04:26:02,361 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, 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]
[2021-02-24 04:26:02,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-02-24 04:26:02,361 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-24 04:26:02,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-24 04:26:02,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1144708820, now seen corresponding path program 1 times
[2021-02-24 04:26:02,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-24 04:26:02,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317980439]
[2021-02-24 04:26:02,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-24 04:26:02,368 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-24 04:26:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 04:26:02,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:26:02,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:26:02,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:26:02,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-24 04:26:02,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:26:02,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:26:02,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:26:02,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:26:02,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-24 04:26:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 04:26:02,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:26:02,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:26:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-24 04:26:02,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317980439]
[2021-02-24 04:26:02,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-24 04:26:02,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-02-24 04:26:02,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147374958]
[2021-02-24 04:26:02,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-02-24 04:26:02,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-24 04:26:02,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-02-24 04:26:02,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-02-24 04:26:02,460 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand 5 states.
[2021-02-24 04:26:02,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-24 04:26:02,670 INFO L93 Difference]: Finished difference Result 166 states and 176 transitions.
[2021-02-24 04:26:02,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-02-24 04:26:02,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45
[2021-02-24 04:26:02,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-24 04:26:02,672 INFO L225 Difference]: With dead ends: 166
[2021-02-24 04:26:02,672 INFO L226 Difference]: Without dead ends: 116
[2021-02-24 04:26:02,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2021-02-24 04:26:02,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2021-02-24 04:26:02,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 92.
[2021-02-24 04:26:02,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states.
[2021-02-24 04:26:02,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions.
[2021-02-24 04:26:02,686 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 45
[2021-02-24 04:26:02,686 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-24 04:26:02,686 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions.
[2021-02-24 04:26:02,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2021-02-24 04:26:02,687 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions.
[2021-02-24 04:26:02,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2021-02-24 04:26:02,688 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-24 04:26:02,689 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, 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]
[2021-02-24 04:26:02,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-02-24 04:26:02,689 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-24 04:26:02,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-24 04:26:02,690 INFO L82 PathProgramCache]: Analyzing trace with hash -524232047, now seen corresponding path program 1 times
[2021-02-24 04:26:02,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-24 04:26:02,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965430073]
[2021-02-24 04:26:02,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-24 04:26:02,695 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-24 04:26:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-24 04:26:02,721 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-24 04:26:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-24 04:26:02,748 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-24 04:26:02,799 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2021-02-24 04:26:02,799 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2021-02-24 04:26:02,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-02-24 04:26:02,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:26:02 BoogieIcfgContainer
[2021-02-24 04:26:02,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-24 04:26:02,821 INFO L168 Benchmark]: Toolchain (without parser) took 3669.27 ms. Allocated memory was 151.0 MB in the beginning and 200.3 MB in the end (delta: 49.3 MB). Free memory was 125.2 MB in the beginning and 162.1 MB in the end (delta: -37.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 8.0 GB.
[2021-02-24 04:26:02,822 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-24 04:26:02,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 581.69 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 102.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB.
[2021-02-24 04:26:02,824 INFO L168 Benchmark]: Boogie Preprocessor took 89.71 ms. Allocated memory is still 151.0 MB. Free memory was 102.1 MB in the beginning and 99.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB.
[2021-02-24 04:26:02,825 INFO L168 Benchmark]: RCFGBuilder took 1195.13 ms. Allocated memory is still 151.0 MB. Free memory was 98.9 MB in the beginning and 104.6 MB in the end (delta: -5.7 MB). Peak memory consumption was 29.8 MB. Max. memory is 8.0 GB.
[2021-02-24 04:26:02,826 INFO L168 Benchmark]: TraceAbstraction took 1781.46 ms. Allocated memory was 151.0 MB in the beginning and 200.3 MB in the end (delta: 49.3 MB). Free memory was 104.1 MB in the beginning and 162.1 MB in the end (delta: -58.0 MB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-24 04:26:02,829 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 581.69 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 102.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 89.71 ms. Allocated memory is still 151.0 MB. Free memory was 102.1 MB in the beginning and 99.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 1195.13 ms. Allocated memory is still 151.0 MB. Free memory was 98.9 MB in the beginning and 104.6 MB in the end (delta: -5.7 MB). Peak memory consumption was 29.8 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1781.46 ms. Allocated memory was 151.0 MB in the beginning and 200.3 MB in the end (delta: 49.3 MB). Free memory was 104.1 MB in the beginning and 162.1 MB in the end (delta: -58.0 MB). There was no memory consumed. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 568]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L532] int i = 0;
[L533] int y = 0;
[L534] List a = (List) malloc(sizeof(struct node));
[L535] COND FALSE !(a == 0)
[L536] List t;
[L537] List p = a;
[L538] i < 10 && __VERIFIER_nondet_int()
[L538] i < 10 && __VERIFIER_nondet_int()
[L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int())
[L546] y < 10 && __VERIFIER_nondet_int()
[L546] y < 10 && __VERIFIER_nondet_int()
[L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int())
[L554] p->h = 3
[L555] p->n = 0
[L556] i = 0
[L557] y = 0
[L558] p = a
[L559] EXPR p->h
[L559] COND FALSE !(p->h == 1)
[L563] EXPR p->h
[L563] COND FALSE !(p->h == 2)
[L567] EXPR p->h
[L567] COND TRUE p->h != 3 || (i + y) < 20
[L568] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 10 procedures, 139 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 292 SDtfs, 125 SDslu, 288 SDs, 0 SdLazy, 327 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=0, 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, 3 MinimizatonAttempts, 77 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...