/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-d623d84
[2020-07-20 11:31:36,603 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-20 11:31:36,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 11:31:36,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 11:31:36,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 11:31:36,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 11:31:36,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 11:31:36,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 11:31:36,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 11:31:36,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 11:31:36,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 11:31:36,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 11:31:36,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 11:31:36,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 11:31:36,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 11:31:36,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 11:31:36,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 11:31:36,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 11:31:36,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 11:31:36,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 11:31:36,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 11:31:36,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 11:31:36,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 11:31:36,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 11:31:36,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 11:31:36,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 11:31:36,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 11:31:36,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 11:31:36,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 11:31:36,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 11:31:36,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 11:31:36,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 11:31:36,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 11:31:36,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 11:31:36,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 11:31:36,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 11:31:36,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-20 11:31:36,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-20 11:31:36,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-20 11:31:36,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-20 11:31:36,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 11:31:36,684 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-07-20 11:31:36,718 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-20 11:31:36,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 11:31:36,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 11:31:36,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-20 11:31:36,724 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-20 11:31:36,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 11:31:36,725 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-20 11:31:36,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-20 11:31:36,725 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-20 11:31:36,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-20 11:31:36,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 11:31:36,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 11:31:36,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 11:31:36,726 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-20 11:31:36,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-20 11:31:36,727 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-20 11:31:36,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-20 11:31:36,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 11:31:36,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-20 11:31:36,728 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-20 11:31:36,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-20 11:31:36,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 11:31:36,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 11:31:36,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 11:31:36,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 11:31:36,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-20 11:31:36,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:31:36,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 11:31:36,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-20 11:31:36,729 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY
[2020-07-20 11:31:37,029 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 11:31:37,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 11:31:37,048 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 11:31:37,050 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-20 11:31:37,050 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-20 11:31:37,052 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i
[2020-07-20 11:31:37,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4ca0f5a1/c7e6019ef51a45388a65202e37831c6d/FLAGf3f527306
[2020-07-20 11:31:37,660 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-20 11:31:37,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i
[2020-07-20 11:31:37,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4ca0f5a1/c7e6019ef51a45388a65202e37831c6d/FLAGf3f527306
[2020-07-20 11:31:37,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4ca0f5a1/c7e6019ef51a45388a65202e37831c6d
[2020-07-20 11:31:37,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 11:31:37,960 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 11:31:37,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 11:31:37,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 11:31:37,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 11:31:37,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:31:37" (1/1) ...
[2020-07-20 11:31:37,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b72a91b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:37, skipping insertion in model container
[2020-07-20 11:31:37,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:31:37" (1/1) ...
[2020-07-20 11:31:37,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-20 11:31:38,020 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-20 11:31:38,544 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 11:31:38,563 INFO L203 MainTranslator]: Completed pre-run
[2020-07-20 11:31:38,629 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 11:31:38,677 INFO L208 MainTranslator]: Completed translation
[2020-07-20 11:31:38,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:38 WrapperNode
[2020-07-20 11:31:38,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 11:31:38,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 11:31:38,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 11:31:38,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 11:31:38,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:38" (1/1) ...
[2020-07-20 11:31:38,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:38" (1/1) ...
[2020-07-20 11:31:38,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:38" (1/1) ...
[2020-07-20 11:31:38,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:38" (1/1) ...
[2020-07-20 11:31:38,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:38" (1/1) ...
[2020-07-20 11:31:38,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:38" (1/1) ...
[2020-07-20 11:31:38,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:38" (1/1) ...
[2020-07-20 11:31:38,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 11:31:38,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 11:31:38,753 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 11:31:38,753 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-20 11:31:38,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:38" (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
[2020-07-20 11:31:38,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 11:31:38,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 11:31:38,825 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 11:31:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2020-07-20 11:31:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure atof
[2020-07-20 11:31:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure atoi
[2020-07-20 11:31:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure atol
[2020-07-20 11:31:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure atoll
[2020-07-20 11:31:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtod
[2020-07-20 11:31:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtof
[2020-07-20 11:31:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtold
[2020-07-20 11:31:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtol
[2020-07-20 11:31:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul
[2020-07-20 11:31:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq
[2020-07-20 11:31:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq
[2020-07-20 11:31:38,830 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll
[2020-07-20 11:31:38,830 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull
[2020-07-20 11:31:38,831 INFO L130 BoogieDeclarations]: Found specification of procedure l64a
[2020-07-20 11:31:38,831 INFO L130 BoogieDeclarations]: Found specification of procedure a64l
[2020-07-20 11:31:38,831 INFO L130 BoogieDeclarations]: Found specification of procedure select
[2020-07-20 11:31:38,831 INFO L130 BoogieDeclarations]: Found specification of procedure pselect
[2020-07-20 11:31:38,831 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2020-07-20 11:31:38,832 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2020-07-20 11:31:38,832 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2020-07-20 11:31:38,833 INFO L130 BoogieDeclarations]: Found specification of procedure random
[2020-07-20 11:31:38,834 INFO L130 BoogieDeclarations]: Found specification of procedure srandom
[2020-07-20 11:31:38,834 INFO L130 BoogieDeclarations]: Found specification of procedure initstate
[2020-07-20 11:31:38,835 INFO L130 BoogieDeclarations]: Found specification of procedure setstate
[2020-07-20 11:31:38,835 INFO L130 BoogieDeclarations]: Found specification of procedure random_r
[2020-07-20 11:31:38,835 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r
[2020-07-20 11:31:38,835 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r
[2020-07-20 11:31:38,835 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r
[2020-07-20 11:31:38,835 INFO L130 BoogieDeclarations]: Found specification of procedure rand
[2020-07-20 11:31:38,836 INFO L130 BoogieDeclarations]: Found specification of procedure srand
[2020-07-20 11:31:38,836 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r
[2020-07-20 11:31:38,836 INFO L130 BoogieDeclarations]: Found specification of procedure drand48
[2020-07-20 11:31:38,836 INFO L130 BoogieDeclarations]: Found specification of procedure erand48
[2020-07-20 11:31:38,836 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48
[2020-07-20 11:31:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48
[2020-07-20 11:31:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48
[2020-07-20 11:31:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48
[2020-07-20 11:31:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure srand48
[2020-07-20 11:31:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure seed48
[2020-07-20 11:31:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48
[2020-07-20 11:31:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r
[2020-07-20 11:31:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r
[2020-07-20 11:31:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r
[2020-07-20 11:31:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r
[2020-07-20 11:31:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r
[2020-07-20 11:31:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r
[2020-07-20 11:31:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r
[2020-07-20 11:31:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r
[2020-07-20 11:31:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r
[2020-07-20 11:31:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-07-20 11:31:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure calloc
[2020-07-20 11:31:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure realloc
[2020-07-20 11:31:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure free
[2020-07-20 11:31:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure cfree
[2020-07-20 11:31:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure alloca
[2020-07-20 11:31:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure valloc
[2020-07-20 11:31:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign
[2020-07-20 11:31:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc
[2020-07-20 11:31:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-07-20 11:31:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure atexit
[2020-07-20 11:31:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit
[2020-07-20 11:31:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit
[2020-07-20 11:31:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure exit
[2020-07-20 11:31:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit
[2020-07-20 11:31:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit
[2020-07-20 11:31:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure getenv
[2020-07-20 11:31:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure putenv
[2020-07-20 11:31:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure setenv
[2020-07-20 11:31:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv
[2020-07-20 11:31:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv
[2020-07-20 11:31:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp
[2020-07-20 11:31:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp
[2020-07-20 11:31:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps
[2020-07-20 11:31:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp
[2020-07-20 11:31:38,843 INFO L130 BoogieDeclarations]: Found specification of procedure system
[2020-07-20 11:31:38,843 INFO L130 BoogieDeclarations]: Found specification of procedure realpath
[2020-07-20 11:31:38,843 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch
[2020-07-20 11:31:38,843 INFO L130 BoogieDeclarations]: Found specification of procedure qsort
[2020-07-20 11:31:38,843 INFO L130 BoogieDeclarations]: Found specification of procedure abs
[2020-07-20 11:31:38,843 INFO L130 BoogieDeclarations]: Found specification of procedure labs
[2020-07-20 11:31:38,844 INFO L130 BoogieDeclarations]: Found specification of procedure llabs
[2020-07-20 11:31:38,844 INFO L130 BoogieDeclarations]: Found specification of procedure div
[2020-07-20 11:31:38,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv
[2020-07-20 11:31:38,844 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv
[2020-07-20 11:31:38,844 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt
[2020-07-20 11:31:38,844 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt
[2020-07-20 11:31:38,845 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt
[2020-07-20 11:31:38,845 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt
[2020-07-20 11:31:38,845 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt
[2020-07-20 11:31:38,845 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt
[2020-07-20 11:31:38,845 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r
[2020-07-20 11:31:38,845 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r
[2020-07-20 11:31:38,845 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r
[2020-07-20 11:31:38,846 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r
[2020-07-20 11:31:38,846 INFO L130 BoogieDeclarations]: Found specification of procedure mblen
[2020-07-20 11:31:38,846 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc
[2020-07-20 11:31:38,846 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb
[2020-07-20 11:31:38,846 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs
[2020-07-20 11:31:38,846 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs
[2020-07-20 11:31:38,846 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch
[2020-07-20 11:31:38,847 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt
[2020-07-20 11:31:38,847 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg
[2020-07-20 11:31:38,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-20 11:31:38,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 11:31:38,847 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-20 11:31:38,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-07-20 11:31:38,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-07-20 11:31:38,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-07-20 11:31:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-07-20 11:31:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-07-20 11:31:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-20 11:31:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 11:31:38,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 11:31:39,386 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 11:31:39,386 INFO L295 CfgBuilder]: Removed 11 assume(true) statements.
[2020-07-20 11:31:39,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:31:39 BoogieIcfgContainer
[2020-07-20 11:31:39,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 11:31:39,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 11:31:39,392 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 11:31:39,395 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-20 11:31:39,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:31:37" (1/3) ...
[2020-07-20 11:31:39,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2bfc32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:31:39, skipping insertion in model container
[2020-07-20 11:31:39,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:38" (2/3) ...
[2020-07-20 11:31:39,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2bfc32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:31:39, skipping insertion in model container
[2020-07-20 11:31:39,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:31:39" (3/3) ...
[2020-07-20 11:31:39,399 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i
[2020-07-20 11:31:39,410 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 11:31:39,418 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations.
[2020-07-20 11:31:39,433 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2020-07-20 11:31:39,459 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-20 11:31:39,459 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-20 11:31:39,459 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 11:31:39,459 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 11:31:39,460 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 11:31:39,461 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-20 11:31:39,461 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 11:31:39,461 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 11:31:39,482 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states.
[2020-07-20 11:31:39,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-07-20 11:31:39,488 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 11:31:39,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 11:31:39,490 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:31:39,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:31:39,497 INFO L82 PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times
[2020-07-20 11:31:39,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:31:39,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949435978]
[2020-07-20 11:31:39,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:31:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-20 11:31:39,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 1 conjunts are in the unsatisfiable core
[2020-07-20 11:31:39,697 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 11:31:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 11:31:39,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 11:31:39,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949435978]
[2020-07-20 11:31:39,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 11:31:39,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-07-20 11:31:39,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437193966]
[2020-07-20 11:31:39,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-07-20 11:31:39,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 11:31:39,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-07-20 11:31:39,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-20 11:31:39,748 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states.
[2020-07-20 11:31:39,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 11:31:39,772 INFO L93 Difference]: Finished difference Result 67 states and 104 transitions.
[2020-07-20 11:31:39,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2020-07-20 11:31:39,774 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10
[2020-07-20 11:31:39,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 11:31:39,784 INFO L225 Difference]: With dead ends: 67
[2020-07-20 11:31:39,784 INFO L226 Difference]: Without dead ends: 31
[2020-07-20 11:31:39,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-20 11:31:39,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2020-07-20 11:31:39,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31.
[2020-07-20 11:31:39,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states.
[2020-07-20 11:31:39,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions.
[2020-07-20 11:31:39,827 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 10
[2020-07-20 11:31:39,828 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 11:31:39,828 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions.
[2020-07-20 11:31:39,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-07-20 11:31:39,828 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions.
[2020-07-20 11:31:39,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-07-20 11:31:39,829 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 11:31:39,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 11:31:40,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:31:40,046 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:31:40,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:31:40,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1556669446, now seen corresponding path program 1 times
[2020-07-20 11:31:40,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:31:40,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026751263]
[2020-07-20 11:31:40,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:31:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-20 11:31:40,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-07-20 11:31:40,145 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 11:31:40,205 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8
[2020-07-20 11:31:40,208 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:40,217 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:40,217 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:40,218 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4
[2020-07-20 11:31:40,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 11:31:40,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 11:31:40,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026751263]
[2020-07-20 11:31:40,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 11:31:40,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-20 11:31:40,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177333509]
[2020-07-20 11:31:40,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-20 11:31:40,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 11:31:40,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-20 11:31:40,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-20 11:31:40,234 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 4 states.
[2020-07-20 11:31:40,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 11:31:40,306 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions.
[2020-07-20 11:31:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-07-20 11:31:40,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11
[2020-07-20 11:31:40,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 11:31:40,309 INFO L225 Difference]: With dead ends: 37
[2020-07-20 11:31:40,309 INFO L226 Difference]: Without dead ends: 35
[2020-07-20 11:31:40,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-07-20 11:31:40,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2020-07-20 11:31:40,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29.
[2020-07-20 11:31:40,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2020-07-20 11:31:40,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions.
[2020-07-20 11:31:40,317 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11
[2020-07-20 11:31:40,317 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 11:31:40,317 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions.
[2020-07-20 11:31:40,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-20 11:31:40,317 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions.
[2020-07-20 11:31:40,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-07-20 11:31:40,318 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 11:31:40,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 11:31:40,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:31:40,532 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:31:40,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:31:40,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times
[2020-07-20 11:31:40,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:31:40,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833063566]
[2020-07-20 11:31:40,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:31:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-20 11:31:40,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-07-20 11:31:40,629 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 11:31:40,639 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2020-07-20 11:31:40,640 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:40,643 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:40,643 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:40,643 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9
[2020-07-20 11:31:40,667 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7
[2020-07-20 11:31:40,668 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:40,670 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:40,671 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:40,671 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3
[2020-07-20 11:31:40,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 11:31:40,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 11:31:40,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833063566]
[2020-07-20 11:31:40,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 11:31:40,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-20 11:31:40,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420455402]
[2020-07-20 11:31:40,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-20 11:31:40,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 11:31:40,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-20 11:31:40,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-20 11:31:40,681 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states.
[2020-07-20 11:31:40,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 11:31:40,774 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions.
[2020-07-20 11:31:40,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-07-20 11:31:40,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14
[2020-07-20 11:31:40,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 11:31:40,775 INFO L225 Difference]: With dead ends: 54
[2020-07-20 11:31:40,775 INFO L226 Difference]: Without dead ends: 52
[2020-07-20 11:31:40,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2020-07-20 11:31:40,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2020-07-20 11:31:40,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36.
[2020-07-20 11:31:40,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states.
[2020-07-20 11:31:40,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions.
[2020-07-20 11:31:40,784 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 14
[2020-07-20 11:31:40,784 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 11:31:40,784 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions.
[2020-07-20 11:31:40,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-20 11:31:40,785 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions.
[2020-07-20 11:31:40,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-07-20 11:31:40,785 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 11:31:40,786 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 11:31:41,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:31:41,001 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:31:41,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:31:41,002 INFO L82 PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times
[2020-07-20 11:31:41,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:31:41,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128153701]
[2020-07-20 11:31:41,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:31:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-20 11:31:41,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 30 conjunts are in the unsatisfiable core
[2020-07-20 11:31:41,138 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 11:31:41,162 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size
[2020-07-20 11:31:41,163 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11
[2020-07-20 11:31:41,163 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:41,180 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:41,186 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2020-07-20 11:31:41,187 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:41,216 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:41,217 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:41,217 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:26
[2020-07-20 11:31:41,274 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:41,275 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39
[2020-07-20 11:31:41,276 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:41,327 INFO L624 ElimStorePlain]: treesize reduction 14, result has 80.3 percent of original size
[2020-07-20 11:31:41,335 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:41,355 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:41,361 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 11:31:41,364 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 20
[2020-07-20 11:31:41,365 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:41,379 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:41,381 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:41,381 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:59, output treesize:24
[2020-07-20 11:31:41,443 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:41,444 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26
[2020-07-20 11:31:41,445 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:41,470 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:41,473 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_30|, |v_#memory_int_31|], 4=[|v_#memory_int_33|]}
[2020-07-20 11:31:41,477 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:41,506 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:41,509 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:41,527 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:41,531 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 11:31:41,551 INFO L350 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size
[2020-07-20 11:31:41,552 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45
[2020-07-20 11:31:41,553 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:41,570 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:41,574 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:41,574 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:77, output treesize:40
[2020-07-20 11:31:41,659 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13
[2020-07-20 11:31:41,661 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:41,668 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:41,669 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:41,669 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3
[2020-07-20 11:31:41,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 11:31:41,683 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 11:31:41,719 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_31|], 3=[|v_#memory_int_30|]}
[2020-07-20 11:31:41,722 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:41,737 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:41,740 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:41,750 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:41,752 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:41,752 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:63, output treesize:55
[2020-07-20 11:31:41,804 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_29|], 6=[|v_#memory_int_35|]}
[2020-07-20 11:31:41,808 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:41,833 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:41,837 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:41,854 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:41,857 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:41,858 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:96, output treesize:102
[2020-07-20 11:31:43,999 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:44,000 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32
[2020-07-20 11:31:44,001 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:44,014 INFO L624 ElimStorePlain]: treesize reduction 125, result has 0.8 percent of original size
[2020-07-20 11:31:44,015 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_28| vanished before elimination
[2020-07-20 11:31:44,016 INFO L544 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:44,016 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 14 variables, input treesize:138, output treesize:1
[2020-07-20 11:31:44,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 11:31:44,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128153701]
[2020-07-20 11:31:44,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 11:31:44,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2020-07-20 11:31:44,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038492449]
[2020-07-20 11:31:44,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-07-20 11:31:44,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 11:31:44,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-07-20 11:31:44,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110
[2020-07-20 11:31:44,027 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 11 states.
[2020-07-20 11:31:50,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 11:31:50,736 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions.
[2020-07-20 11:31:50,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2020-07-20 11:31:50,737 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17
[2020-07-20 11:31:50,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 11:31:50,738 INFO L225 Difference]: With dead ends: 62
[2020-07-20 11:31:50,739 INFO L226 Difference]: Without dead ends: 60
[2020-07-20 11:31:50,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=78, Invalid=193, Unknown=1, NotChecked=0, Total=272
[2020-07-20 11:31:50,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2020-07-20 11:31:50,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 27.
[2020-07-20 11:31:50,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2020-07-20 11:31:50,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions.
[2020-07-20 11:31:50,746 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17
[2020-07-20 11:31:50,746 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 11:31:50,747 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions.
[2020-07-20 11:31:50,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-07-20 11:31:50,747 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions.
[2020-07-20 11:31:50,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-07-20 11:31:50,747 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 11:31:50,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 11:31:50,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:31:50,954 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:31:50,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:31:50,955 INFO L82 PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times
[2020-07-20 11:31:50,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:31:50,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097826647]
[2020-07-20 11:31:50,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:31:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-20 11:31:51,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core
[2020-07-20 11:31:51,048 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 11:31:51,070 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7
[2020-07-20 11:31:51,071 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:51,075 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:51,075 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:51,075 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3
[2020-07-20 11:31:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 11:31:51,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 11:31:51,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097826647]
[2020-07-20 11:31:51,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 11:31:51,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-20 11:31:51,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120199215]
[2020-07-20 11:31:51,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-20 11:31:51,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 11:31:51,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-20 11:31:51,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-20 11:31:51,089 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states.
[2020-07-20 11:31:51,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 11:31:51,164 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions.
[2020-07-20 11:31:51,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-07-20 11:31:51,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18
[2020-07-20 11:31:51,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 11:31:51,165 INFO L225 Difference]: With dead ends: 42
[2020-07-20 11:31:51,166 INFO L226 Difference]: Without dead ends: 30
[2020-07-20 11:31:51,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-07-20 11:31:51,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2020-07-20 11:31:51,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29.
[2020-07-20 11:31:51,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2020-07-20 11:31:51,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions.
[2020-07-20 11:31:51,171 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18
[2020-07-20 11:31:51,172 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 11:31:51,172 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions.
[2020-07-20 11:31:51,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-20 11:31:51,172 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions.
[2020-07-20 11:31:51,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-07-20 11:31:51,173 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 11:31:51,173 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 11:31:51,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:31:51,385 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:31:51,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:31:51,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times
[2020-07-20 11:31:51,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:31:51,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519556609]
[2020-07-20 11:31:51,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:31:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-20 11:31:51,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-07-20 11:31:51,479 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 11:31:51,495 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 11:31:51,551 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size
[2020-07-20 11:31:51,552 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48
[2020-07-20 11:31:51,552 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:51,611 INFO L624 ElimStorePlain]: treesize reduction 16, result has 81.4 percent of original size
[2020-07-20 11:31:51,616 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 11:31:51,671 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size
[2020-07-20 11:31:51,672 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48
[2020-07-20 11:31:51,673 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:51,731 INFO L624 ElimStorePlain]: treesize reduction 16, result has 79.7 percent of original size
[2020-07-20 11:31:51,732 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:51,733 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:77, output treesize:63
[2020-07-20 11:31:51,820 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts
[2020-07-20 11:31:51,824 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts
[2020-07-20 11:31:51,842 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7
[2020-07-20 11:31:51,842 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:51,852 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2020-07-20 11:31:51,853 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:51,863 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:51,864 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22
[2020-07-20 11:31:51,865 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:51,913 INFO L624 ElimStorePlain]: treesize reduction 12, result has 84.6 percent of original size
[2020-07-20 11:31:51,917 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2020-07-20 11:31:51,918 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:51,922 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7
[2020-07-20 11:31:51,923 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:51,931 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:51,931 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22
[2020-07-20 11:31:51,932 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:51,944 INFO L624 ElimStorePlain]: treesize reduction 20, result has 25.9 percent of original size
[2020-07-20 11:31:51,945 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:51,945 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:110, output treesize:7
[2020-07-20 11:31:51,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 11:31:51,958 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 11:31:51,987 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 11:31:51,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 11:31:51,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519556609]
[2020-07-20 11:31:51,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 11:31:51,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7
[2020-07-20 11:31:51,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444609319]
[2020-07-20 11:31:51,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-07-20 11:31:51,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 11:31:51,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-07-20 11:31:52,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-07-20 11:31:52,000 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 7 states.
[2020-07-20 11:31:52,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 11:31:52,234 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions.
[2020-07-20 11:31:52,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-07-20 11:31:52,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21
[2020-07-20 11:31:52,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 11:31:52,236 INFO L225 Difference]: With dead ends: 53
[2020-07-20 11:31:52,236 INFO L226 Difference]: Without dead ends: 31
[2020-07-20 11:31:52,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72
[2020-07-20 11:31:52,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2020-07-20 11:31:52,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31.
[2020-07-20 11:31:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states.
[2020-07-20 11:31:52,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions.
[2020-07-20 11:31:52,243 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21
[2020-07-20 11:31:52,243 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 11:31:52,243 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions.
[2020-07-20 11:31:52,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-07-20 11:31:52,243 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions.
[2020-07-20 11:31:52,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-07-20 11:31:52,244 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 11:31:52,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 11:31:52,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:31:52,457 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:31:52,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:31:52,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times
[2020-07-20 11:31:52,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:31:52,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098617694]
[2020-07-20 11:31:52,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:31:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-20 11:31:52,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 53 conjunts are in the unsatisfiable core
[2020-07-20 11:31:52,562 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 11:31:52,595 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size
[2020-07-20 11:31:52,596 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11
[2020-07-20 11:31:52,596 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:52,613 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:52,613 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:52,614 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:23
[2020-07-20 11:31:52,703 INFO L350 Elim1Store]: treesize reduction 8, result has 87.3 percent of original size
[2020-07-20 11:31:52,704 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 69
[2020-07-20 11:31:52,705 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:52,784 INFO L624 ElimStorePlain]: treesize reduction 28, result has 75.7 percent of original size
[2020-07-20 11:31:52,791 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15
[2020-07-20 11:31:52,792 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:52,835 INFO L624 ElimStorePlain]: treesize reduction 4, result has 94.6 percent of original size
[2020-07-20 11:31:52,840 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 11:31:52,841 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15
[2020-07-20 11:31:52,842 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:52,861 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:52,862 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:52,862 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:85, output treesize:57
[2020-07-20 11:31:52,992 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 11:31:53,030 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:53,031 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 49
[2020-07-20 11:31:53,033 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:53,163 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 81
[2020-07-20 11:31:53,164 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:53,170 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_38|, |v_#memory_int_40|], 2=[|v_#memory_int_39|], 4=[|v_#memory_$Pointer$.offset_29|, |v_#memory_$Pointer$.base_29|, |v_#memory_$Pointer$.base_31|, |v_#memory_$Pointer$.offset_31|]}
[2020-07-20 11:31:53,178 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:53,251 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:53,263 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11
[2020-07-20 11:31:53,264 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:53,343 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:53,351 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3
[2020-07-20 11:31:53,352 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:53,421 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:53,426 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:53,497 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:53,504 INFO L544 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:53,548 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:53,675 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43
[2020-07-20 11:31:53,676 INFO L350 Elim1Store]: treesize reduction 124, result has 41.2 percent of original size
[2020-07-20 11:31:53,676 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 159 treesize of output 152
[2020-07-20 11:31:53,679 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 2, 1] term
[2020-07-20 11:31:53,679 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts
[2020-07-20 11:31:53,681 INFO L544 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:53,767 INFO L624 ElimStorePlain]: treesize reduction 82, result has 62.2 percent of original size
[2020-07-20 11:31:53,772 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 11:31:53,773 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 11:31:53,775 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 43
[2020-07-20 11:31:53,776 INFO L544 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:53,800 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:53,801 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 7 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:53,801 INFO L244 ElimStorePlain]: Needed 9 recursive calls to eliminate 11 variables, input treesize:272, output treesize:89
[2020-07-20 11:31:53,878 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10
[2020-07-20 11:31:53,878 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:53,889 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:53,890 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:53,890 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:100, output treesize:74
[2020-07-20 11:31:54,622 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:54,623 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 61
[2020-07-20 11:31:54,625 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts
[2020-07-20 11:31:54,625 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts
[2020-07-20 11:31:54,626 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts
[2020-07-20 11:31:54,627 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:54,639 INFO L624 ElimStorePlain]: treesize reduction 36, result has 20.0 percent of original size
[2020-07-20 11:31:54,640 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:54,640 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:75, output treesize:4
[2020-07-20 11:31:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 11:31:54,658 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 11:31:54,734 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_38|, |#memory_int|], 2=[|v_#memory_int_39|, |v_#memory_$Pointer$.offset_32|], 6=[|v_#memory_$Pointer$.offset_29|, |v_#memory_$Pointer$.base_29|, |v_#memory_$Pointer$.base_32|]}
[2020-07-20 11:31:54,743 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:54,798 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:54,808 INFO L173 IndexEqualityManager]: detected equality via solver
[2020-07-20 11:31:54,811 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:54,811 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 10
[2020-07-20 11:31:54,812 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:54,864 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:54,874 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4
[2020-07-20 11:31:54,874 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2020-07-20 11:31:54,917 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:54,927 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:54,958 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:54,962 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:54,997 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:55,001 INFO L544 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:55,022 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:55,028 INFO L544 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:55,040 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:31:55,042 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 7 dim-2 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:31:55,042 INFO L244 ElimStorePlain]: Needed 8 recursive calls to eliminate 10 variables, input treesize:178, output treesize:140
[2020-07-20 11:31:55,127 INFO L440 ElimStorePlain]: Different costs {6=[|#memory_$Pointer$.offset|], 14=[|#memory_$Pointer$.base|]}
[2020-07-20 11:31:55,218 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185239022 treesize of output 185173486
[2020-07-20 11:32:12,370 INFO L544 ElimStorePlain]: Start of recursive call 2: 16384 dim-0 vars, End of recursive call: 16384 dim-0 vars, and 2 xjuncts.
[2020-07-20 11:34:36,623 WARN L193 SmtUtils]: Spent 2.40 m on a formula simplification. DAG size of input: 250822 DAG size of output: 98
[2020-07-20 11:34:36,624 INFO L624 ElimStorePlain]: treesize reduction 185172446, result has 0.0 percent of original size
[2020-07-20 11:34:36,719 INFO L173 IndexEqualityManager]: detected equality via solver
[2020-07-20 11:34:36,906 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 98
[2020-07-20 11:34:36,907 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:34:36,911 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 23026969 treesize of output 22928464
[2020-07-20 11:34:36,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098617694]
[2020-07-20 11:34:36,965 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range
[2020-07-20 11:34:36,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences.
[2020-07-20 11:34:36,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0
[2020-07-20 11:34:36,965 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible
[2020-07-20 11:34:36,966 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-20 11:34:37,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:34:37,200 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2020-07-20 11:34:37,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:34:37 BoogieIcfgContainer
[2020-07-20 11:34:37,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 11:34:37,202 INFO L168 Benchmark]: Toolchain (without parser) took 179244.32 ms. Allocated memory was 139.5 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 101.7 MB in the beginning and 885.5 MB in the end (delta: -783.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB.
[2020-07-20 11:34:37,202 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-07-20 11:34:37,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.93 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 101.3 MB in the beginning and 172.3 MB in the end (delta: -71.0 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB.
[2020-07-20 11:34:37,203 INFO L168 Benchmark]: Boogie Preprocessor took 73.07 ms. Allocated memory is still 205.0 MB. Free memory was 172.3 MB in the beginning and 169.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB.
[2020-07-20 11:34:37,204 INFO L168 Benchmark]: RCFGBuilder took 638.17 ms. Allocated memory is still 205.0 MB. Free memory was 169.6 MB in the beginning and 122.7 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB.
[2020-07-20 11:34:37,204 INFO L168 Benchmark]: TraceAbstraction took 177808.59 ms. Allocated memory was 205.0 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 122.1 MB in the beginning and 885.5 MB in the end (delta: -763.4 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB.
[2020-07-20 11:34:37,207 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 717.93 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 101.3 MB in the beginning and 172.3 MB in the end (delta: -71.0 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 73.07 ms. Allocated memory is still 205.0 MB. Free memory was 172.3 MB in the beginning and 169.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 638.17 ms. Allocated memory is still 205.0 MB. Free memory was 169.6 MB in the beginning and 122.7 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 177808.59 ms. Allocated memory was 205.0 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 122.1 MB in the beginning and 885.5 MB in the end (delta: -763.4 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 1038]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: unable to decide satisfiability of path constraint.
Possible FailurePath:
[L994] SLL* null = malloc(sizeof(SLL));
[L995] null->colour = BLACK
[L996] null->next = ((void*)0)
[L998] SLL* list = malloc(sizeof(SLL));
[L999] list->next = null
[L1000] list->colour = BLACK
[L1002] SLL* end = list;
[L1005] COND TRUE __VERIFIER_nondet_int()
[L1008] end->next = malloc(sizeof(SLL))
[L1009] EXPR end->next
[L1009] end = end->next
[L1010] end->next = null
[L1012] COND FALSE !(__VERIFIER_nondet_int())
[L1018] end->colour = RED
[L1019] end->next = malloc(sizeof(SLL))
[L1020] EXPR end->next
[L1020] end = end->next
[L1021] end->next = null
[L1022] end->colour = BLACK
[L1005] COND FALSE !(__VERIFIER_nondet_int())
[L1026] end = null
[L1027] end = list
[L1030] COND FALSE !(!(null != end))
[L1031] EXPR end->colour
[L1031] COND FALSE !(!(BLACK == end->colour))
[L1033] COND TRUE null != end
[L1035] EXPR end->colour
[L1035] COND FALSE !(RED == end->colour)
[L1042] EXPR end->next
[L1042] end = end->next
[L1033] COND TRUE null != end
[L1035] EXPR end->colour
[L1035] COND TRUE RED == end->colour
[L1037] EXPR end->next
[L1037] end = end->next
[L1038] COND TRUE !(null != end)
[L1038] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 177.7s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 167 SDtfs, 153 SDslu, 353 SDs, 0 SdLazy, 275 SolverSat, 63 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 6 MinimizatonAttempts, 56 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 121 ConstructedInterpolants, 9 QuantifiedInterpolants, 30043 SizeOfPredicates, 33 NumberOfNonLiveVariables, 549 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 2/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
Received shutdown request...