/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 SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -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 21:55:32,730 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-07-20 21:55:32,733 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 21:55:32,752 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 21:55:32,752 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 21:55:32,754 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 21:55:32,756 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 21:55:32,767 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 21:55:32,772 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 21:55:32,774 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 21:55:32,775 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 21:55:32,777 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 21:55:32,777 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 21:55:32,779 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 21:55:32,781 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 21:55:32,782 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 21:55:32,783 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 21:55:32,784 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 21:55:32,786 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 21:55:32,791 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 21:55:32,796 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 21:55:32,799 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 21:55:32,800 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 21:55:32,801 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 21:55:32,803 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 21:55:32,803 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 21:55:32,803 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 21:55:32,804 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 21:55:32,804 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 21:55:32,808 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 21:55:32,809 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 21:55:32,810 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 21:55:32,811 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 21:55:32,812 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 21:55:32,813 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 21:55:32,813 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 21:55:32,814 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-20 21:55:32,814 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-20 21:55:32,814 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-20 21:55:32,815 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-20 21:55:32,816 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 21:55:32,817 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 21:55:32,852 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-07-20 21:55:32,853 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 21:55:32,857 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 21:55:32,857 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-07-20 21:55:32,857 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-07-20 21:55:32,858 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 21:55:32,858 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-07-20 21:55:32,858 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-07-20 21:55:32,858 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-07-20 21:55:32,858 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-07-20 21:55:32,858 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 21:55:32,859 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 21:55:32,859 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 21:55:32,859 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-07-20 21:55:32,860 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-07-20 21:55:32,860 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-07-20 21:55:32,861 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-07-20 21:55:32,861 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 21:55:32,861 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-07-20 21:55:32,861 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-07-20 21:55:32,861 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-07-20 21:55:32,861 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 21:55:32,862 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 21:55:32,862 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 21:55:32,862 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 21:55:32,863 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-07-20 21:55:32,863 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:55:32,863 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 21:55:32,863 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-07-20 21:55:32,863 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 -> SMT_FEATURE_HEURISTIC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4
[2020-07-20 21:55:33,167 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 21:55:33,183 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 21:55:33,188 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 21:55:33,189 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-07-20 21:55:33,190 INFO  L275        PluginConnector]: CDTParser initialized
[2020-07-20 21:55:33,192 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i
[2020-07-20 21:55:33,266 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8cd4784b/af62bfbb17f94808b31d548db89895c7/FLAG639d3bc35
[2020-07-20 21:55:33,736 INFO  L306              CDTParser]: Found 1 translation units.
[2020-07-20 21:55:33,737 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i
[2020-07-20 21:55:33,763 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8cd4784b/af62bfbb17f94808b31d548db89895c7/FLAG639d3bc35
[2020-07-20 21:55:34,096 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8cd4784b/af62bfbb17f94808b31d548db89895c7
[2020-07-20 21:55:34,104 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 21:55:34,107 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 21:55:34,108 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 21:55:34,108 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 21:55:34,111 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 21:55:34,112 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:55:34" (1/1) ...
[2020-07-20 21:55:34,115 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dcaa2e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34, skipping insertion in model container
[2020-07-20 21:55:34,115 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:55:34" (1/1) ...
[2020-07-20 21:55:34,123 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-07-20 21:55:34,167 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-07-20 21:55:34,554 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-20 21:55:34,565 INFO  L203         MainTranslator]: Completed pre-run
[2020-07-20 21:55:34,610 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-20 21:55:34,665 INFO  L208         MainTranslator]: Completed translation
[2020-07-20 21:55:34,666 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34 WrapperNode
[2020-07-20 21:55:34,666 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 21:55:34,667 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 21:55:34,667 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 21:55:34,667 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 21:55:34,681 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34" (1/1) ...
[2020-07-20 21:55:34,682 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34" (1/1) ...
[2020-07-20 21:55:34,697 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34" (1/1) ...
[2020-07-20 21:55:34,698 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34" (1/1) ...
[2020-07-20 21:55:34,714 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34" (1/1) ...
[2020-07-20 21:55:34,721 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34" (1/1) ...
[2020-07-20 21:55:34,725 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34" (1/1) ...
[2020-07-20 21:55:34,731 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 21:55:34,732 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 21:55:34,732 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 21:55:34,732 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-07-20 21:55:34,733 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34" (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 21:55:34,810 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 21:55:34,810 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 21:55:34,810 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 21:55:34,811 INFO  L130     BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2020-07-20 21:55:34,811 INFO  L130     BoogieDeclarations]: Found specification of procedure atof
[2020-07-20 21:55:34,811 INFO  L130     BoogieDeclarations]: Found specification of procedure atoi
[2020-07-20 21:55:34,812 INFO  L130     BoogieDeclarations]: Found specification of procedure atol
[2020-07-20 21:55:34,812 INFO  L130     BoogieDeclarations]: Found specification of procedure atoll
[2020-07-20 21:55:34,812 INFO  L130     BoogieDeclarations]: Found specification of procedure strtod
[2020-07-20 21:55:34,812 INFO  L130     BoogieDeclarations]: Found specification of procedure strtof
[2020-07-20 21:55:34,813 INFO  L130     BoogieDeclarations]: Found specification of procedure strtold
[2020-07-20 21:55:34,813 INFO  L130     BoogieDeclarations]: Found specification of procedure strtol
[2020-07-20 21:55:34,813 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoul
[2020-07-20 21:55:34,814 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoq
[2020-07-20 21:55:34,814 INFO  L130     BoogieDeclarations]: Found specification of procedure strtouq
[2020-07-20 21:55:34,815 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoll
[2020-07-20 21:55:34,815 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoull
[2020-07-20 21:55:34,815 INFO  L130     BoogieDeclarations]: Found specification of procedure l64a
[2020-07-20 21:55:34,815 INFO  L130     BoogieDeclarations]: Found specification of procedure a64l
[2020-07-20 21:55:34,815 INFO  L130     BoogieDeclarations]: Found specification of procedure select
[2020-07-20 21:55:34,815 INFO  L130     BoogieDeclarations]: Found specification of procedure pselect
[2020-07-20 21:55:34,816 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2020-07-20 21:55:34,816 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2020-07-20 21:55:34,816 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2020-07-20 21:55:34,816 INFO  L130     BoogieDeclarations]: Found specification of procedure random
[2020-07-20 21:55:34,817 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom
[2020-07-20 21:55:34,817 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate
[2020-07-20 21:55:34,817 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate
[2020-07-20 21:55:34,818 INFO  L130     BoogieDeclarations]: Found specification of procedure random_r
[2020-07-20 21:55:34,818 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom_r
[2020-07-20 21:55:34,818 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate_r
[2020-07-20 21:55:34,818 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate_r
[2020-07-20 21:55:34,818 INFO  L130     BoogieDeclarations]: Found specification of procedure rand
[2020-07-20 21:55:34,818 INFO  L130     BoogieDeclarations]: Found specification of procedure srand
[2020-07-20 21:55:34,819 INFO  L130     BoogieDeclarations]: Found specification of procedure rand_r
[2020-07-20 21:55:34,819 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48
[2020-07-20 21:55:34,819 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48
[2020-07-20 21:55:34,819 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48
[2020-07-20 21:55:34,819 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48
[2020-07-20 21:55:34,819 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48
[2020-07-20 21:55:34,819 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48
[2020-07-20 21:55:34,820 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48
[2020-07-20 21:55:34,820 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48
[2020-07-20 21:55:34,820 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48
[2020-07-20 21:55:34,820 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48_r
[2020-07-20 21:55:34,820 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48_r
[2020-07-20 21:55:34,820 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48_r
[2020-07-20 21:55:34,822 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48_r
[2020-07-20 21:55:34,822 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48_r
[2020-07-20 21:55:34,823 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48_r
[2020-07-20 21:55:34,823 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48_r
[2020-07-20 21:55:34,823 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48_r
[2020-07-20 21:55:34,823 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48_r
[2020-07-20 21:55:34,823 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-07-20 21:55:34,824 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2020-07-20 21:55:34,824 INFO  L130     BoogieDeclarations]: Found specification of procedure realloc
[2020-07-20 21:55:34,824 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-07-20 21:55:34,824 INFO  L130     BoogieDeclarations]: Found specification of procedure cfree
[2020-07-20 21:55:34,825 INFO  L130     BoogieDeclarations]: Found specification of procedure alloca
[2020-07-20 21:55:34,826 INFO  L130     BoogieDeclarations]: Found specification of procedure valloc
[2020-07-20 21:55:34,826 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_memalign
[2020-07-20 21:55:34,826 INFO  L130     BoogieDeclarations]: Found specification of procedure aligned_alloc
[2020-07-20 21:55:34,826 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-07-20 21:55:34,826 INFO  L130     BoogieDeclarations]: Found specification of procedure atexit
[2020-07-20 21:55:34,826 INFO  L130     BoogieDeclarations]: Found specification of procedure at_quick_exit
[2020-07-20 21:55:34,826 INFO  L130     BoogieDeclarations]: Found specification of procedure on_exit
[2020-07-20 21:55:34,827 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-07-20 21:55:34,827 INFO  L130     BoogieDeclarations]: Found specification of procedure quick_exit
[2020-07-20 21:55:34,828 INFO  L130     BoogieDeclarations]: Found specification of procedure _Exit
[2020-07-20 21:55:34,828 INFO  L130     BoogieDeclarations]: Found specification of procedure getenv
[2020-07-20 21:55:34,828 INFO  L130     BoogieDeclarations]: Found specification of procedure putenv
[2020-07-20 21:55:34,828 INFO  L130     BoogieDeclarations]: Found specification of procedure setenv
[2020-07-20 21:55:34,829 INFO  L130     BoogieDeclarations]: Found specification of procedure unsetenv
[2020-07-20 21:55:34,829 INFO  L130     BoogieDeclarations]: Found specification of procedure clearenv
[2020-07-20 21:55:34,829 INFO  L130     BoogieDeclarations]: Found specification of procedure mktemp
[2020-07-20 21:55:34,830 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemp
[2020-07-20 21:55:34,830 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemps
[2020-07-20 21:55:34,830 INFO  L130     BoogieDeclarations]: Found specification of procedure mkdtemp
[2020-07-20 21:55:34,830 INFO  L130     BoogieDeclarations]: Found specification of procedure system
[2020-07-20 21:55:34,830 INFO  L130     BoogieDeclarations]: Found specification of procedure realpath
[2020-07-20 21:55:34,830 INFO  L130     BoogieDeclarations]: Found specification of procedure bsearch
[2020-07-20 21:55:34,831 INFO  L130     BoogieDeclarations]: Found specification of procedure qsort
[2020-07-20 21:55:34,831 INFO  L130     BoogieDeclarations]: Found specification of procedure abs
[2020-07-20 21:55:34,831 INFO  L130     BoogieDeclarations]: Found specification of procedure labs
[2020-07-20 21:55:34,831 INFO  L130     BoogieDeclarations]: Found specification of procedure llabs
[2020-07-20 21:55:34,831 INFO  L130     BoogieDeclarations]: Found specification of procedure div
[2020-07-20 21:55:34,831 INFO  L130     BoogieDeclarations]: Found specification of procedure ldiv
[2020-07-20 21:55:34,832 INFO  L130     BoogieDeclarations]: Found specification of procedure lldiv
[2020-07-20 21:55:34,832 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt
[2020-07-20 21:55:34,832 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt
[2020-07-20 21:55:34,832 INFO  L130     BoogieDeclarations]: Found specification of procedure gcvt
[2020-07-20 21:55:34,832 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt
[2020-07-20 21:55:34,832 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt
[2020-07-20 21:55:34,832 INFO  L130     BoogieDeclarations]: Found specification of procedure qgcvt
[2020-07-20 21:55:34,833 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt_r
[2020-07-20 21:55:34,833 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt_r
[2020-07-20 21:55:34,833 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt_r
[2020-07-20 21:55:34,833 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt_r
[2020-07-20 21:55:34,833 INFO  L130     BoogieDeclarations]: Found specification of procedure mblen
[2020-07-20 21:55:34,833 INFO  L130     BoogieDeclarations]: Found specification of procedure mbtowc
[2020-07-20 21:55:34,834 INFO  L130     BoogieDeclarations]: Found specification of procedure wctomb
[2020-07-20 21:55:34,834 INFO  L130     BoogieDeclarations]: Found specification of procedure mbstowcs
[2020-07-20 21:55:34,834 INFO  L130     BoogieDeclarations]: Found specification of procedure wcstombs
[2020-07-20 21:55:34,834 INFO  L130     BoogieDeclarations]: Found specification of procedure rpmatch
[2020-07-20 21:55:34,834 INFO  L130     BoogieDeclarations]: Found specification of procedure getsubopt
[2020-07-20 21:55:34,834 INFO  L130     BoogieDeclarations]: Found specification of procedure getloadavg
[2020-07-20 21:55:34,835 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-20 21:55:34,835 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 21:55:34,835 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-07-20 21:55:34,835 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-07-20 21:55:34,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-07-20 21:55:34,835 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-07-20 21:55:34,835 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-07-20 21:55:34,836 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-07-20 21:55:34,836 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-20 21:55:34,836 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 21:55:34,836 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 21:55:35,372 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 21:55:35,373 INFO  L295             CfgBuilder]: Removed 11 assume(true) statements.
[2020-07-20 21:55:35,377 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:55:35 BoogieIcfgContainer
[2020-07-20 21:55:35,377 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 21:55:35,378 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 21:55:35,378 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 21:55:35,381 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-07-20 21:55:35,382 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:55:34" (1/3) ...
[2020-07-20 21:55:35,383 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf30302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:55:35, skipping insertion in model container
[2020-07-20 21:55:35,383 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:55:34" (2/3) ...
[2020-07-20 21:55:35,383 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf30302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:55:35, skipping insertion in model container
[2020-07-20 21:55:35,383 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:55:35" (3/3) ...
[2020-07-20 21:55:35,385 INFO  L109   eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i
[2020-07-20 21:55:35,395 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 21:55:35,402 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations.
[2020-07-20 21:55:35,414 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2020-07-20 21:55:35,435 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-07-20 21:55:35,435 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-07-20 21:55:35,435 INFO  L377      AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 21:55:35,436 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 21:55:35,436 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 21:55:35,436 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-07-20 21:55:35,436 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 21:55:35,436 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 21:55:35,455 INFO  L276                IsEmpty]: Start isEmpty. Operand 38 states.
[2020-07-20 21:55:35,460 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-07-20 21:55:35,460 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 21:55:35,461 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 21:55:35,462 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 21:55:35,468 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:55:35,468 INFO  L82        PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times
[2020-07-20 21:55:35,477 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:55:35,477 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078000888]
[2020-07-20 21:55:35,478 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
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 21:55:35,716 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-20 21:55:35,716 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:55:35,721 INFO  L263         TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-07-20 21:55:35,728 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:55:35,810 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 21:55:35,816 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:35,824 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:35,824 INFO  L544         ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars,  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:35,825 INFO  L244         ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4
[2020-07-20 21:55:35,840 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 21:55:35,841 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:55:35,843 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078000888]
[2020-07-20 21:55:35,843 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:55:35,844 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-20 21:55:35,845 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950747934]
[2020-07-20 21:55:35,853 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-20 21:55:35,853 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:55:35,867 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-20 21:55:35,868 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-20 21:55:35,871 INFO  L87              Difference]: Start difference. First operand 38 states. Second operand 4 states.
[2020-07-20 21:55:35,996 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:55:35,996 INFO  L93              Difference]: Finished difference Result 73 states and 118 transitions.
[2020-07-20 21:55:35,997 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-07-20 21:55:35,998 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 10
[2020-07-20 21:55:35,999 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:55:36,011 INFO  L225             Difference]: With dead ends: 73
[2020-07-20 21:55:36,011 INFO  L226             Difference]: Without dead ends: 35
[2020-07-20 21:55:36,017 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 21:55:36,037 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2020-07-20 21:55:36,080 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29.
[2020-07-20 21:55:36,084 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2020-07-20 21:55:36,085 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions.
[2020-07-20 21:55:36,087 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 10
[2020-07-20 21:55:36,088 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:55:36,088 INFO  L479      AbstractCegarLoop]: Abstraction has 29 states and 32 transitions.
[2020-07-20 21:55:36,088 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-20 21:55:36,088 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions.
[2020-07-20 21:55:36,089 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-07-20 21:55:36,089 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 21:55:36,090 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 21:55:36,305 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:55:36,306 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 21:55:36,306 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:55:36,307 INFO  L82        PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times
[2020-07-20 21:55:36,307 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:55:36,307 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089594381]
[2020-07-20 21:55:36,307 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
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 21:55:36,421 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-20 21:55:36,421 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:55:36,423 INFO  L263         TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-07-20 21:55:36,425 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:55:36,441 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 21:55:36,441 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:36,444 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:36,444 INFO  L544         ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:36,444 INFO  L244         ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9
[2020-07-20 21:55:36,467 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 21:55:36,468 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:36,470 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:36,470 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 21:55:36,471 INFO  L244         ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3
[2020-07-20 21:55:36,478 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 21:55:36,478 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:55:36,478 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089594381]
[2020-07-20 21:55:36,479 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:55:36,479 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-20 21:55:36,479 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289386419]
[2020-07-20 21:55:36,480 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-20 21:55:36,481 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:55:36,481 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-20 21:55:36,481 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-20 21:55:36,482 INFO  L87              Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states.
[2020-07-20 21:55:36,572 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:55:36,572 INFO  L93              Difference]: Finished difference Result 54 states and 60 transitions.
[2020-07-20 21:55:36,572 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-07-20 21:55:36,573 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 14
[2020-07-20 21:55:36,573 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:55:36,574 INFO  L225             Difference]: With dead ends: 54
[2020-07-20 21:55:36,574 INFO  L226             Difference]: Without dead ends: 52
[2020-07-20 21:55:36,575 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 21:55:36,576 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2020-07-20 21:55:36,582 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36.
[2020-07-20 21:55:36,582 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 36 states.
[2020-07-20 21:55:36,583 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions.
[2020-07-20 21:55:36,584 INFO  L78                 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 14
[2020-07-20 21:55:36,584 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:55:36,584 INFO  L479      AbstractCegarLoop]: Abstraction has 36 states and 40 transitions.
[2020-07-20 21:55:36,584 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-20 21:55:36,584 INFO  L276                IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions.
[2020-07-20 21:55:36,585 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-07-20 21:55:36,585 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 21:55:36,585 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 21:55:36,799 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:55:36,800 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 21:55:36,800 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:55:36,801 INFO  L82        PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times
[2020-07-20 21:55:36,801 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:55:36,802 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266044372]
[2020-07-20 21:55:36,802 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
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 21:55:37,123 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-20 21:55:37,123 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:55:37,128 INFO  L263         TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 32 conjunts are in the unsatisfiable core
[2020-07-20 21:55:37,131 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:55:37,156 INFO  L350             Elim1Store]: treesize reduction 15, result has 25.0 percent of original size
[2020-07-20 21:55:37,157 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 21:55:37,158 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:37,173 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:37,180 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 21:55:37,181 INFO  L544         ElimStorePlain]: Start of recursive call 3:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:37,196 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:37,197 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 21:55:37,197 INFO  L244         ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:29
[2020-07-20 21:55:37,260 INFO  L350             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:37,261 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 21:55:37,263 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:37,315 INFO  L624         ElimStorePlain]: treesize reduction 14, result has 81.1 percent of original size
[2020-07-20 21:55:37,322 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 21:55:37,346 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:37,369 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:55:37,372 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 21:55:37,373 INFO  L544         ElimStorePlain]: Start of recursive call 4:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:37,388 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:37,390 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 21:55:37,390 INFO  L244         ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:62, output treesize:27
[2020-07-20 21:55:37,456 INFO  L350             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:37,457 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 21:55:37,459 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:37,495 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:37,497 INFO  L440         ElimStorePlain]: Different costs {2=[|v_#memory_int_30|, |v_#memory_int_31|], 4=[|v_#memory_int_33|]}
[2020-07-20 21:55:37,501 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 21:55:37,526 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:37,529 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 21:55:37,548 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:37,553 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:55:37,573 INFO  L350             Elim1Store]: treesize reduction 42, result has 28.8 percent of original size
[2020-07-20 21:55:37,574 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 21:55:37,575 INFO  L544         ElimStorePlain]: Start of recursive call 5:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:37,594 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:37,599 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 21:55:37,599 INFO  L244         ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:80, output treesize:43
[2020-07-20 21:55:37,685 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 33 treesize of output 13
[2020-07-20 21:55:37,686 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:37,693 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:37,694 INFO  L544         ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:37,694 INFO  L244         ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:45, output treesize:3
[2020-07-20 21:55:37,711 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 21:55:37,712 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 21:55:37,752 INFO  L440         ElimStorePlain]: Different costs {2=[|v_#memory_int_31|], 3=[|v_#memory_int_30|]}
[2020-07-20 21:55:37,755 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 21:55:37,770 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:37,774 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 21:55:37,783 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:37,785 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 21:55:37,785 INFO  L244         ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:63, output treesize:55
[2020-07-20 21:55:37,838 INFO  L440         ElimStorePlain]: Different costs {2=[|v_#memory_int_29|], 6=[|v_#memory_int_35|]}
[2020-07-20 21:55:37,844 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 21:55:37,873 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:37,876 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 21:55:37,896 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:37,899 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 21:55:37,899 INFO  L244         ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:96, output treesize:102
[2020-07-20 21:55:40,039 INFO  L350             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:40,040 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 21:55:40,041 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:40,043 INFO  L624         ElimStorePlain]: treesize reduction 114, result has 0.9 percent of original size
[2020-07-20 21:55:40,045 INFO  L512         ElimStorePlain]: Eliminatee |v_#memory_int_28| vanished before elimination
[2020-07-20 21:55:40,045 INFO  L544         ElimStorePlain]: Start of recursive call 1: 11 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:40,046 INFO  L244         ElimStorePlain]: Needed 2 recursive calls to eliminate 13 variables, input treesize:127, output treesize:1
[2020-07-20 21:55:40,052 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 21:55:40,053 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266044372]
[2020-07-20 21:55:40,053 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 21:55:40,053 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2020-07-20 21:55:40,053 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855140557]
[2020-07-20 21:55:40,054 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-07-20 21:55:40,054 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:55:40,054 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-07-20 21:55:40,055 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110
[2020-07-20 21:55:40,055 INFO  L87              Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 11 states.
[2020-07-20 21:55:42,686 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:55:42,687 INFO  L93              Difference]: Finished difference Result 62 states and 71 transitions.
[2020-07-20 21:55:42,687 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-07-20 21:55:42,687 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 17
[2020-07-20 21:55:42,688 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:55:42,689 INFO  L225             Difference]: With dead ends: 62
[2020-07-20 21:55:42,689 INFO  L226             Difference]: Without dead ends: 60
[2020-07-20 21:55:42,690 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 21:55:42,690 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2020-07-20 21:55:42,695 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 27.
[2020-07-20 21:55:42,696 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2020-07-20 21:55:42,696 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions.
[2020-07-20 21:55:42,697 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17
[2020-07-20 21:55:42,697 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:55:42,697 INFO  L479      AbstractCegarLoop]: Abstraction has 27 states and 30 transitions.
[2020-07-20 21:55:42,697 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-07-20 21:55:42,697 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions.
[2020-07-20 21:55:42,698 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-07-20 21:55:42,698 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 21:55:42,698 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 21:55:42,913 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:55:42,914 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 21:55:42,914 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:55:42,915 INFO  L82        PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times
[2020-07-20 21:55:42,915 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:55:42,915 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511441945]
[2020-07-20 21:55:42,916 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
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 21:55:43,006 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-20 21:55:43,007 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:55:43,008 INFO  L263         TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-07-20 21:55:43,010 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:55:43,018 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 21:55:43,019 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:43,022 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:43,022 INFO  L544         ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:43,023 INFO  L244         ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9
[2020-07-20 21:55:43,034 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 21:55:43,035 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:43,037 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:43,037 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 21:55:43,037 INFO  L244         ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3
[2020-07-20 21:55:43,046 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 21:55:43,046 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:55:43,046 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511441945]
[2020-07-20 21:55:43,047 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:55:43,047 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-20 21:55:43,047 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519310696]
[2020-07-20 21:55:43,048 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-20 21:55:43,048 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:55:43,048 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-20 21:55:43,048 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-20 21:55:43,048 INFO  L87              Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states.
[2020-07-20 21:55:43,129 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:55:43,129 INFO  L93              Difference]: Finished difference Result 62 states and 69 transitions.
[2020-07-20 21:55:43,130 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-07-20 21:55:43,130 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 18
[2020-07-20 21:55:43,130 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:55:43,131 INFO  L225             Difference]: With dead ends: 62
[2020-07-20 21:55:43,131 INFO  L226             Difference]: Without dead ends: 50
[2020-07-20 21:55:43,132 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 1 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 21:55:43,132 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2020-07-20 21:55:43,138 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37.
[2020-07-20 21:55:43,138 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 37 states.
[2020-07-20 21:55:43,139 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions.
[2020-07-20 21:55:43,140 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18
[2020-07-20 21:55:43,140 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:55:43,140 INFO  L479      AbstractCegarLoop]: Abstraction has 37 states and 41 transitions.
[2020-07-20 21:55:43,140 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-20 21:55:43,140 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions.
[2020-07-20 21:55:43,141 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-07-20 21:55:43,141 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 21:55:43,141 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 21:55:43,354 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:55:43,356 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 21:55:43,356 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:55:43,356 INFO  L82        PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times
[2020-07-20 21:55:43,357 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:55:43,357 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726795]
[2020-07-20 21:55:43,358 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
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 21:55:43,467 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-20 21:55:43,468 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:55:43,469 INFO  L263         TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-07-20 21:55:43,471 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:55:43,488 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:55:43,549 INFO  L350             Elim1Store]: treesize reduction 33, result has 55.4 percent of original size
[2020-07-20 21:55:43,550 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 21:55:43,551 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:43,608 INFO  L624         ElimStorePlain]: treesize reduction 16, result has 81.4 percent of original size
[2020-07-20 21:55:43,613 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:55:43,673 INFO  L350             Elim1Store]: treesize reduction 33, result has 55.4 percent of original size
[2020-07-20 21:55:43,674 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 21:55:43,675 INFO  L544         ElimStorePlain]: Start of recursive call 3:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:43,741 INFO  L624         ElimStorePlain]: treesize reduction 16, result has 79.7 percent of original size
[2020-07-20 21:55:43,742 INFO  L544         ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:43,742 INFO  L244         ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:77, output treesize:63
[2020-07-20 21:55:43,817 INFO  L501       QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts
[2020-07-20 21:55:43,821 INFO  L501       QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts
[2020-07-20 21:55:43,830 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 21:55:43,831 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:43,835 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 21:55:43,836 INFO  L544         ElimStorePlain]: Start of recursive call 3:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:43,866 INFO  L350             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:43,867 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 21:55:43,868 INFO  L544         ElimStorePlain]: Start of recursive call 4:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:43,926 INFO  L624         ElimStorePlain]: treesize reduction 12, result has 84.6 percent of original size
[2020-07-20 21:55:43,937 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 21:55:43,938 INFO  L544         ElimStorePlain]: Start of recursive call 5:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:43,942 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 21:55:43,942 INFO  L544         ElimStorePlain]: Start of recursive call 6:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:43,950 INFO  L350             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:43,951 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 21:55:43,952 INFO  L544         ElimStorePlain]: Start of recursive call 7:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:43,964 INFO  L624         ElimStorePlain]: treesize reduction 20, result has 25.9 percent of original size
[2020-07-20 21:55:43,964 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 21:55:43,965 INFO  L244         ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:110, output treesize:7
[2020-07-20 21:55:43,977 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 21:55:43,977 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 21:55:44,012 INFO  L501       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 21:55:44,022 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 21:55:44,022 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726795]
[2020-07-20 21:55:44,023 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 21:55:44,023 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7
[2020-07-20 21:55:44,023 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298784585]
[2020-07-20 21:55:44,023 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-07-20 21:55:44,024 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:55:44,024 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-07-20 21:55:44,024 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-07-20 21:55:44,024 INFO  L87              Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 7 states.
[2020-07-20 21:55:44,243 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:55:44,243 INFO  L93              Difference]: Finished difference Result 51 states and 56 transitions.
[2020-07-20 21:55:44,244 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-07-20 21:55:44,244 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 21
[2020-07-20 21:55:44,244 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:55:44,245 INFO  L225             Difference]: With dead ends: 51
[2020-07-20 21:55:44,245 INFO  L226             Difference]: Without dead ends: 29
[2020-07-20 21:55:44,245 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 21:55:44,246 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2020-07-20 21:55:44,249 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2020-07-20 21:55:44,250 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2020-07-20 21:55:44,251 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions.
[2020-07-20 21:55:44,251 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 21
[2020-07-20 21:55:44,251 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:55:44,251 INFO  L479      AbstractCegarLoop]: Abstraction has 29 states and 32 transitions.
[2020-07-20 21:55:44,251 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-07-20 21:55:44,251 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions.
[2020-07-20 21:55:44,252 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-07-20 21:55:44,252 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 21:55:44,252 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 21:55:44,453 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:55:44,455 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 21:55:44,455 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:55:44,455 INFO  L82        PathProgramCache]: Analyzing trace with hash -1696156082, now seen corresponding path program 1 times
[2020-07-20 21:55:44,456 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:55:44,456 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312382341]
[2020-07-20 21:55:44,457 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
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 21:55:44,641 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-20 21:55:44,642 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:55:44,645 INFO  L263         TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 27 conjunts are in the unsatisfiable core
[2020-07-20 21:55:44,647 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:55:44,669 INFO  L350             Elim1Store]: treesize reduction 15, result has 25.0 percent of original size
[2020-07-20 21:55:44,669 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 21:55:44,670 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:44,678 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:44,682 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 21:55:44,682 INFO  L544         ElimStorePlain]: Start of recursive call 3:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:44,690 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:44,691 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 21:55:44,691 INFO  L244         ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:26
[2020-07-20 21:55:44,742 INFO  L350             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:44,743 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 21:55:44,744 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:44,786 INFO  L624         ElimStorePlain]: treesize reduction 14, result has 80.3 percent of original size
[2020-07-20 21:55:44,790 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 21:55:44,805 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:44,812 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:55:44,814 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 21:55:44,815 INFO  L544         ElimStorePlain]: Start of recursive call 4:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:44,827 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:44,828 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 21:55:44,828 INFO  L244         ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:59, output treesize:24
[2020-07-20 21:55:44,877 INFO  L350             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:44,878 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 21:55:44,878 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:44,908 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:44,910 INFO  L440         ElimStorePlain]: Different costs {2=[|v_#memory_int_41|, |v_#memory_int_42|], 4=[|v_#memory_int_44|]}
[2020-07-20 21:55:44,914 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 21:55:44,934 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:44,938 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 21:55:44,951 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:44,954 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:55:44,972 INFO  L350             Elim1Store]: treesize reduction 42, result has 28.8 percent of original size
[2020-07-20 21:55:44,972 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 21:55:44,973 INFO  L544         ElimStorePlain]: Start of recursive call 5:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:44,989 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:44,994 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 21:55:44,994 INFO  L244         ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:77, output treesize:40
[2020-07-20 21:55:45,085 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 21:55:45,086 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:45,093 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:45,094 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 21:55:45,094 INFO  L244         ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3
[2020-07-20 21:55:45,108 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 21:55:45,109 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 21:55:45,155 INFO  L440         ElimStorePlain]: Different costs {2=[|v_#memory_int_42|], 3=[|v_#memory_int_41|]}
[2020-07-20 21:55:45,158 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 21:55:45,197 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:45,201 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 21:55:45,210 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:45,212 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 21:55:45,212 INFO  L244         ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:65, output treesize:57
[2020-07-20 21:55:45,250 INFO  L440         ElimStorePlain]: Different costs {2=[|v_#memory_int_40|], 6=[|v_#memory_int_46|]}
[2020-07-20 21:55:45,254 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 21:55:45,275 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:45,278 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 21:55:45,291 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:45,293 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 21:55:45,293 INFO  L244         ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:98, output treesize:104
[2020-07-20 21:55:47,436 INFO  L350             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:47,437 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 21:55:47,437 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:47,442 INFO  L624         ElimStorePlain]: treesize reduction 127, result has 0.8 percent of original size
[2020-07-20 21:55:47,443 INFO  L512         ElimStorePlain]: Eliminatee |v_#memory_int_39| vanished before elimination
[2020-07-20 21:55:47,443 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 21:55:47,443 INFO  L244         ElimStorePlain]: Needed 2 recursive calls to eliminate 14 variables, input treesize:140, output treesize:1
[2020-07-20 21:55:47,449 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 21:55:47,450 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312382341]
[2020-07-20 21:55:47,450 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 21:55:47,450 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2020-07-20 21:55:47,450 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633977421]
[2020-07-20 21:55:47,451 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-07-20 21:55:47,451 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:55:47,451 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-07-20 21:55:47,452 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110
[2020-07-20 21:55:47,452 INFO  L87              Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 11 states.
[2020-07-20 21:55:55,919 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:55:55,919 INFO  L93              Difference]: Finished difference Result 67 states and 75 transitions.
[2020-07-20 21:55:55,920 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-07-20 21:55:55,920 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 21
[2020-07-20 21:55:55,920 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:55:55,921 INFO  L225             Difference]: With dead ends: 67
[2020-07-20 21:55:55,921 INFO  L226             Difference]: Without dead ends: 55
[2020-07-20 21:55:55,922 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=70, Invalid=169, Unknown=1, NotChecked=0, Total=240
[2020-07-20 21:55:55,922 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2020-07-20 21:55:55,927 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 31.
[2020-07-20 21:55:55,927 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 31 states.
[2020-07-20 21:55:55,928 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions.
[2020-07-20 21:55:55,928 INFO  L78                 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21
[2020-07-20 21:55:55,928 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:55:55,928 INFO  L479      AbstractCegarLoop]: Abstraction has 31 states and 34 transitions.
[2020-07-20 21:55:55,928 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-07-20 21:55:55,928 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions.
[2020-07-20 21:55:55,929 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-07-20 21:55:55,929 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 21:55:55,929 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 21:55:56,142 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:55:56,143 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 21:55:56,143 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:55:56,143 INFO  L82        PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times
[2020-07-20 21:55:56,144 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:55:56,144 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833085435]
[2020-07-20 21:55:56,144 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
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 21:55:56,413 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 21:55:56,413 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:55:56,416 INFO  L263         TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 40 conjunts are in the unsatisfiable core
[2020-07-20 21:55:56,418 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:55:56,437 INFO  L350             Elim1Store]: treesize reduction 15, result has 25.0 percent of original size
[2020-07-20 21:55:56,438 INFO  L384             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18
[2020-07-20 21:55:56,438 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:56,446 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:56,446 INFO  L544         ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars,  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:56,447 INFO  L244         ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:21
[2020-07-20 21:55:56,494 INFO  L350             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:56,495 INFO  L384             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69
[2020-07-20 21:55:56,496 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:56,555 INFO  L624         ElimStorePlain]: treesize reduction 28, result has 74.5 percent of original size
[2020-07-20 21:55:56,561 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 27 treesize of output 15
[2020-07-20 21:55:56,562 INFO  L544         ElimStorePlain]: Start of recursive call 3:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:56,581 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:56,587 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 27 treesize of output 15
[2020-07-20 21:55:56,587 INFO  L544         ElimStorePlain]: Start of recursive call 4:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:56,608 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:56,609 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 21:55:56,609 INFO  L244         ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:80, output treesize:56
[2020-07-20 21:55:56,722 INFO  L350             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:56,722 INFO  L384             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 41
[2020-07-20 21:55:56,723 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:56,779 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:56,850 INFO  L350             Elim1Store]: treesize reduction 66, result has 49.6 percent of original size
[2020-07-20 21:55:56,851 INFO  L384             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 254 treesize of output 233
[2020-07-20 21:55:56,853 INFO  L320       QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 2, 1] term
[2020-07-20 21:55:56,853 INFO  L501       QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts
[2020-07-20 21:55:56,854 INFO  L544         ElimStorePlain]: Start of recursive call 3:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:56,955 WARN  L193               SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59
[2020-07-20 21:55:56,956 INFO  L624         ElimStorePlain]: treesize reduction 40, result has 85.0 percent of original size
[2020-07-20 21:55:56,959 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 21:55:56,992 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:57,027 INFO  L350             Elim1Store]: treesize reduction 26, result has 60.0 percent of original size
[2020-07-20 21:55:57,028 INFO  L384             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 170 treesize of output 130
[2020-07-20 21:55:57,029 INFO  L544         ElimStorePlain]: Start of recursive call 5:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:57,090 INFO  L624         ElimStorePlain]: treesize reduction 46, result has 76.0 percent of original size
[2020-07-20 21:55:57,196 INFO  L350             Elim1Store]: treesize reduction 95, result has 51.0 percent of original size
[2020-07-20 21:55:57,197 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 5 case distinctions, treesize of input 134 treesize of output 141
[2020-07-20 21:55:57,199 INFO  L320       QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 2, 1] term
[2020-07-20 21:55:57,199 INFO  L501       QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts
[2020-07-20 21:55:57,200 INFO  L544         ElimStorePlain]: Start of recursive call 6:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:57,254 INFO  L624         ElimStorePlain]: treesize reduction 81, result has 52.9 percent of original size
[2020-07-20 21:55:57,256 INFO  L544         ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars,  End of recursive call: 1 dim-0 vars,  and 1 xjuncts.
[2020-07-20 21:55:57,256 INFO  L244         ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:274, output treesize:92
[2020-07-20 21:55:57,323 INFO  L384             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 59
[2020-07-20 21:55:57,324 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:57,338 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:57,340 INFO  L544         ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars,  End of recursive call: 3 dim-0 vars,  and 1 xjuncts.
[2020-07-20 21:55:57,341 INFO  L244         ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:106, output treesize:83
[2020-07-20 21:55:57,391 INFO  L350             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:57,392 INFO  L384             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 69
[2020-07-20 21:55:57,393 INFO  L501       QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts
[2020-07-20 21:55:57,394 INFO  L501       QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts
[2020-07-20 21:55:57,394 INFO  L501       QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts
[2020-07-20 21:55:57,395 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:57,410 INFO  L624         ElimStorePlain]: treesize reduction 9, result has 59.1 percent of original size
[2020-07-20 21:55:57,410 INFO  L544         ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:55:57,411 INFO  L244         ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:87, output treesize:4
[2020-07-20 21:55:57,427 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 21:55:57,428 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 21:55:57,483 INFO  L440         ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_35|], 6=[|v_#memory_$Pointer$.base_35|, |v_#memory_$Pointer$.offset_32|, |v_#memory_$Pointer$.base_32|]}
[2020-07-20 21:55:57,488 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 21:55:57,530 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:57,536 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 21:55:57,568 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:57,571 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 21:55:57,591 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:57,593 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 21:55:57,609 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:57,610 INFO  L544         ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-2 vars,  End of recursive call: 7 dim-0 vars,  and 1 xjuncts.
[2020-07-20 21:55:57,611 INFO  L244         ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:141, output treesize:140
[2020-07-20 21:55:57,686 INFO  L440         ElimStorePlain]: Different costs {6=[|#memory_$Pointer$.offset|], 14=[|#memory_$Pointer$.base|]}
[2020-07-20 21:55:57,718 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 12235058 treesize of output 12230962
[2020-07-20 21:55:58,773 INFO  L544         ElimStorePlain]: Start of recursive call 2: 1024 dim-0 vars,  End of recursive call: 1024 dim-0 vars,  and 2 xjuncts.
[2020-07-20 21:56:39,262 WARN  L193               SmtUtils]: Spent 40.47 s on a formula simplification. DAG size of input: 11909 DAG size of output: 109
[2020-07-20 21:56:39,263 INFO  L624         ElimStorePlain]: treesize reduction 12228944, result has 0.0 percent of original size
[2020-07-20 21:56:39,286 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,287 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:56:39,288 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,289 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:56:39,295 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 22246 treesize of output 22182
[2020-07-20 21:56:39,310 INFO  L544         ElimStorePlain]: Start of recursive call 3:  End of recursive call:  and 2 xjuncts.
[2020-07-20 21:56:39,329 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,333 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:56:39,351 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:56:39,354 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:56:39,354 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,365 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 120 treesize of output 116
[2020-07-20 21:56:39,366 INFO  L544         ElimStorePlain]: Start of recursive call 4:  End of recursive call:  and 2 xjuncts.
[2020-07-20 21:56:39,381 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,382 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,383 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,384 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,384 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,385 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,394 WARN  L234             Elim1Store]: Array PQE input equivalent to true
[2020-07-20 21:56:39,395 INFO  L544         ElimStorePlain]: Start of recursive call 5:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:56:39,511 WARN  L193               SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35
[2020-07-20 21:56:39,511 INFO  L624         ElimStorePlain]: treesize reduction 72, result has 40.0 percent of original size
[2020-07-20 21:56:39,519 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,520 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,521 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,522 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,523 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,523 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,537 WARN  L234             Elim1Store]: Array PQE input equivalent to true
[2020-07-20 21:56:39,538 INFO  L544         ElimStorePlain]: Start of recursive call 6:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:56:39,569 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:56:39,615 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:56:39,615 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,616 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,617 INFO  L544         ElimStorePlain]: Start of recursive call 7:  End of recursive call:  and 1 xjuncts.
[2020-07-20 21:56:39,653 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:56:39,655 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:56:39,658 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:56:39,659 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,661 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:56:39,662 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:39,682 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 91730 treesize of output 91474
[2020-07-20 21:56:39,722 INFO  L544         ElimStorePlain]: Start of recursive call 8:  End of recursive call:  and 2 xjuncts.
[2020-07-20 21:56:41,236 WARN  L193               SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 298 DAG size of output: 70
[2020-07-20 21:56:41,237 INFO  L624         ElimStorePlain]: treesize reduction 90916, result has 0.2 percent of original size
[2020-07-20 21:56:42,418 INFO  L173   IndexEqualityManager]: detected equality via solver
[2020-07-20 21:56:43,015 WARN  L193               SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 98
[2020-07-20 21:56:43,015 INFO  L350             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:56:43,092 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 1171946215753 treesize of output 1167546915328