/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i


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


This is Ultimate 0.1.25-3af5e1f
[2020-09-04 22:07:35,021 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-04 22:07:35,025 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-04 22:07:35,051 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-04 22:07:35,052 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-04 22:07:35,053 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-04 22:07:35,055 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-04 22:07:35,057 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-04 22:07:35,059 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-04 22:07:35,060 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-04 22:07:35,061 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-04 22:07:35,062 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-04 22:07:35,063 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-04 22:07:35,064 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-04 22:07:35,065 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-04 22:07:35,067 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-04 22:07:35,068 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-04 22:07:35,069 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-04 22:07:35,071 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-04 22:07:35,073 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-04 22:07:35,074 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-04 22:07:35,076 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-04 22:07:35,077 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-04 22:07:35,078 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-04 22:07:35,081 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-04 22:07:35,081 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-04 22:07:35,081 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-04 22:07:35,082 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-04 22:07:35,083 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-04 22:07:35,084 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-04 22:07:35,084 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-04 22:07:35,085 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-04 22:07:35,086 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-04 22:07:35,087 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-04 22:07:35,088 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-04 22:07:35,088 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-04 22:07:35,089 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-04 22:07:35,089 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-04 22:07:35,089 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-04 22:07:35,091 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-04 22:07:35,091 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-04 22:07:35,092 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-09-04 22:07:35,118 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-04 22:07:35,119 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-04 22:07:35,122 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-04 22:07:35,122 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-04 22:07:35,122 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-04 22:07:35,123 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-04 22:07:35,123 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-04 22:07:35,124 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-04 22:07:35,124 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-04 22:07:35,124 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-04 22:07:35,124 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-04 22:07:35,125 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-04 22:07:35,125 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-04 22:07:35,125 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-04 22:07:35,125 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-04 22:07:35,125 INFO  L138        SettingsManager]:  * Size of a code block=SingleStatement
[2020-09-04 22:07:35,126 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-04 22:07:35,127 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-04 22:07:35,127 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-04 22:07:35,127 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-04 22:07:35,128 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-09-04 22:07:35,128 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-04 22:07:35,128 INFO  L138        SettingsManager]:  * Use separate solver for trace checks=false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true
[2020-09-04 22:07:35,654 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-04 22:07:35,681 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-04 22:07:35,685 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-04 22:07:35,687 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-04 22:07:35,688 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-04 22:07:35,689 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i
[2020-09-04 22:07:35,787 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2ea3e069/13f1a66fa26242bf826b5fe1a2fc3338/FLAG82198bbbb
[2020-09-04 22:07:36,391 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-04 22:07:36,392 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i
[2020-09-04 22:07:36,409 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2ea3e069/13f1a66fa26242bf826b5fe1a2fc3338/FLAG82198bbbb
[2020-09-04 22:07:36,661 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2ea3e069/13f1a66fa26242bf826b5fe1a2fc3338
[2020-09-04 22:07:36,676 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-04 22:07:36,679 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-04 22:07:36,682 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-04 22:07:36,682 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-04 22:07:36,686 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-04 22:07:36,688 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:07:36" (1/1) ...
[2020-09-04 22:07:36,692 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e3ee29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:36, skipping insertion in model container
[2020-09-04 22:07:36,693 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:07:36" (1/1) ...
[2020-09-04 22:07:36,707 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-04 22:07:36,792 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-04 22:07:37,339 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-04 22:07:37,354 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-04 22:07:37,413 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-04 22:07:37,468 INFO  L208         MainTranslator]: Completed translation
[2020-09-04 22:07:37,469 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37 WrapperNode
[2020-09-04 22:07:37,469 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-04 22:07:37,470 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-04 22:07:37,470 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-04 22:07:37,470 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-04 22:07:37,490 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37" (1/1) ...
[2020-09-04 22:07:37,490 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37" (1/1) ...
[2020-09-04 22:07:37,510 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37" (1/1) ...
[2020-09-04 22:07:37,511 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37" (1/1) ...
[2020-09-04 22:07:37,534 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37" (1/1) ...
[2020-09-04 22:07:37,548 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37" (1/1) ...
[2020-09-04 22:07:37,552 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37" (1/1) ...
[2020-09-04 22:07:37,560 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-04 22:07:37,561 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-04 22:07:37,561 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-04 22:07:37,561 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-04 22:07:37,563 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/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
[2020-09-04 22:07:37,646 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-04 22:07:37,646 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-04 22:07:37,646 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-04 22:07:37,646 INFO  L130     BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2020-09-04 22:07:37,647 INFO  L130     BoogieDeclarations]: Found specification of procedure atof
[2020-09-04 22:07:37,647 INFO  L130     BoogieDeclarations]: Found specification of procedure atoi
[2020-09-04 22:07:37,647 INFO  L130     BoogieDeclarations]: Found specification of procedure atol
[2020-09-04 22:07:37,647 INFO  L130     BoogieDeclarations]: Found specification of procedure atoll
[2020-09-04 22:07:37,647 INFO  L130     BoogieDeclarations]: Found specification of procedure strtod
[2020-09-04 22:07:37,648 INFO  L130     BoogieDeclarations]: Found specification of procedure strtof
[2020-09-04 22:07:37,648 INFO  L130     BoogieDeclarations]: Found specification of procedure strtold
[2020-09-04 22:07:37,648 INFO  L130     BoogieDeclarations]: Found specification of procedure strtol
[2020-09-04 22:07:37,648 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoul
[2020-09-04 22:07:37,649 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoq
[2020-09-04 22:07:37,649 INFO  L130     BoogieDeclarations]: Found specification of procedure strtouq
[2020-09-04 22:07:37,649 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoll
[2020-09-04 22:07:37,649 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoull
[2020-09-04 22:07:37,649 INFO  L130     BoogieDeclarations]: Found specification of procedure l64a
[2020-09-04 22:07:37,650 INFO  L130     BoogieDeclarations]: Found specification of procedure a64l
[2020-09-04 22:07:37,650 INFO  L130     BoogieDeclarations]: Found specification of procedure select
[2020-09-04 22:07:37,650 INFO  L130     BoogieDeclarations]: Found specification of procedure pselect
[2020-09-04 22:07:37,650 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2020-09-04 22:07:37,651 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2020-09-04 22:07:37,652 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2020-09-04 22:07:37,652 INFO  L130     BoogieDeclarations]: Found specification of procedure random
[2020-09-04 22:07:37,652 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom
[2020-09-04 22:07:37,652 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate
[2020-09-04 22:07:37,652 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate
[2020-09-04 22:07:37,652 INFO  L130     BoogieDeclarations]: Found specification of procedure random_r
[2020-09-04 22:07:37,653 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom_r
[2020-09-04 22:07:37,653 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate_r
[2020-09-04 22:07:37,653 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate_r
[2020-09-04 22:07:37,653 INFO  L130     BoogieDeclarations]: Found specification of procedure rand
[2020-09-04 22:07:37,653 INFO  L130     BoogieDeclarations]: Found specification of procedure srand
[2020-09-04 22:07:37,653 INFO  L130     BoogieDeclarations]: Found specification of procedure rand_r
[2020-09-04 22:07:37,654 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48
[2020-09-04 22:07:37,654 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48
[2020-09-04 22:07:37,654 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48
[2020-09-04 22:07:37,654 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48
[2020-09-04 22:07:37,654 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48
[2020-09-04 22:07:37,654 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48
[2020-09-04 22:07:37,655 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48
[2020-09-04 22:07:37,655 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48
[2020-09-04 22:07:37,655 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48
[2020-09-04 22:07:37,655 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48_r
[2020-09-04 22:07:37,655 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48_r
[2020-09-04 22:07:37,656 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48_r
[2020-09-04 22:07:37,656 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48_r
[2020-09-04 22:07:37,656 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48_r
[2020-09-04 22:07:37,656 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48_r
[2020-09-04 22:07:37,656 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48_r
[2020-09-04 22:07:37,656 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48_r
[2020-09-04 22:07:37,657 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48_r
[2020-09-04 22:07:37,657 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-04 22:07:37,657 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2020-09-04 22:07:37,657 INFO  L130     BoogieDeclarations]: Found specification of procedure realloc
[2020-09-04 22:07:37,657 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-04 22:07:37,657 INFO  L130     BoogieDeclarations]: Found specification of procedure cfree
[2020-09-04 22:07:37,657 INFO  L130     BoogieDeclarations]: Found specification of procedure alloca
[2020-09-04 22:07:37,657 INFO  L130     BoogieDeclarations]: Found specification of procedure valloc
[2020-09-04 22:07:37,657 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_memalign
[2020-09-04 22:07:37,658 INFO  L130     BoogieDeclarations]: Found specification of procedure aligned_alloc
[2020-09-04 22:07:37,658 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-09-04 22:07:37,658 INFO  L130     BoogieDeclarations]: Found specification of procedure atexit
[2020-09-04 22:07:37,658 INFO  L130     BoogieDeclarations]: Found specification of procedure at_quick_exit
[2020-09-04 22:07:37,658 INFO  L130     BoogieDeclarations]: Found specification of procedure on_exit
[2020-09-04 22:07:37,658 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-09-04 22:07:37,658 INFO  L130     BoogieDeclarations]: Found specification of procedure quick_exit
[2020-09-04 22:07:37,658 INFO  L130     BoogieDeclarations]: Found specification of procedure _Exit
[2020-09-04 22:07:37,658 INFO  L130     BoogieDeclarations]: Found specification of procedure getenv
[2020-09-04 22:07:37,659 INFO  L130     BoogieDeclarations]: Found specification of procedure putenv
[2020-09-04 22:07:37,659 INFO  L130     BoogieDeclarations]: Found specification of procedure setenv
[2020-09-04 22:07:37,659 INFO  L130     BoogieDeclarations]: Found specification of procedure unsetenv
[2020-09-04 22:07:37,659 INFO  L130     BoogieDeclarations]: Found specification of procedure clearenv
[2020-09-04 22:07:37,659 INFO  L130     BoogieDeclarations]: Found specification of procedure mktemp
[2020-09-04 22:07:37,659 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemp
[2020-09-04 22:07:37,660 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemps
[2020-09-04 22:07:37,660 INFO  L130     BoogieDeclarations]: Found specification of procedure mkdtemp
[2020-09-04 22:07:37,660 INFO  L130     BoogieDeclarations]: Found specification of procedure system
[2020-09-04 22:07:37,660 INFO  L130     BoogieDeclarations]: Found specification of procedure realpath
[2020-09-04 22:07:37,660 INFO  L130     BoogieDeclarations]: Found specification of procedure bsearch
[2020-09-04 22:07:37,660 INFO  L130     BoogieDeclarations]: Found specification of procedure qsort
[2020-09-04 22:07:37,661 INFO  L130     BoogieDeclarations]: Found specification of procedure abs
[2020-09-04 22:07:37,661 INFO  L130     BoogieDeclarations]: Found specification of procedure labs
[2020-09-04 22:07:37,661 INFO  L130     BoogieDeclarations]: Found specification of procedure llabs
[2020-09-04 22:07:37,661 INFO  L130     BoogieDeclarations]: Found specification of procedure div
[2020-09-04 22:07:37,661 INFO  L130     BoogieDeclarations]: Found specification of procedure ldiv
[2020-09-04 22:07:37,661 INFO  L130     BoogieDeclarations]: Found specification of procedure lldiv
[2020-09-04 22:07:37,662 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt
[2020-09-04 22:07:37,662 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt
[2020-09-04 22:07:37,662 INFO  L130     BoogieDeclarations]: Found specification of procedure gcvt
[2020-09-04 22:07:37,662 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt
[2020-09-04 22:07:37,662 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt
[2020-09-04 22:07:37,662 INFO  L130     BoogieDeclarations]: Found specification of procedure qgcvt
[2020-09-04 22:07:37,663 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt_r
[2020-09-04 22:07:37,663 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt_r
[2020-09-04 22:07:37,663 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt_r
[2020-09-04 22:07:37,663 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt_r
[2020-09-04 22:07:37,663 INFO  L130     BoogieDeclarations]: Found specification of procedure mblen
[2020-09-04 22:07:37,663 INFO  L130     BoogieDeclarations]: Found specification of procedure mbtowc
[2020-09-04 22:07:37,663 INFO  L130     BoogieDeclarations]: Found specification of procedure wctomb
[2020-09-04 22:07:37,664 INFO  L130     BoogieDeclarations]: Found specification of procedure mbstowcs
[2020-09-04 22:07:37,664 INFO  L130     BoogieDeclarations]: Found specification of procedure wcstombs
[2020-09-04 22:07:37,664 INFO  L130     BoogieDeclarations]: Found specification of procedure rpmatch
[2020-09-04 22:07:37,664 INFO  L130     BoogieDeclarations]: Found specification of procedure getsubopt
[2020-09-04 22:07:37,664 INFO  L130     BoogieDeclarations]: Found specification of procedure getloadavg
[2020-09-04 22:07:37,664 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-04 22:07:37,664 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-04 22:07:37,664 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-04 22:07:37,665 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-04 22:07:37,665 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-04 22:07:37,665 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-04 22:07:37,665 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-04 22:07:37,665 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-04 22:07:37,665 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-04 22:07:38,432 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-04 22:07:38,433 INFO  L295             CfgBuilder]: Removed 30 assume(true) statements.
[2020-09-04 22:07:38,445 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:07:38 BoogieIcfgContainer
[2020-09-04 22:07:38,446 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-04 22:07:38,448 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-04 22:07:38,448 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-04 22:07:38,453 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-04 22:07:38,453 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 10:07:36" (1/3) ...
[2020-09-04 22:07:38,454 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cd087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:07:38, skipping insertion in model container
[2020-09-04 22:07:38,455 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37" (2/3) ...
[2020-09-04 22:07:38,455 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cd087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:07:38, skipping insertion in model container
[2020-09-04 22:07:38,455 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:07:38" (3/3) ...
[2020-09-04 22:07:38,458 INFO  L109   eAbstractionObserver]: Analyzing ICFG sll-01-2.i
[2020-09-04 22:07:38,470 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-04 22:07:38,484 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations.
[2020-09-04 22:07:38,509 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 13 error locations.
[2020-09-04 22:07:38,542 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-04 22:07:38,543 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-04 22:07:38,543 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-04 22:07:38,543 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-04 22:07:38,543 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-04 22:07:38,543 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-04 22:07:38,544 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-04 22:07:38,544 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-04 22:07:38,573 INFO  L276                IsEmpty]: Start isEmpty. Operand 171 states.
[2020-09-04 22:07:38,584 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-09-04 22:07:38,584 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:38,586 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:38,586 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:38,594 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:38,594 INFO  L82        PathProgramCache]: Analyzing trace with hash 885652866, now seen corresponding path program 1 times
[2020-09-04 22:07:38,607 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:38,608 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19712045]
[2020-09-04 22:07:38,608 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:38,742 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:38,857 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:38,860 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:38,875 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 22:07:38,876 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19712045]
[2020-09-04 22:07:38,878 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 22:07:38,878 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-04 22:07:38,880 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314014074]
[2020-09-04 22:07:38,886 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-04 22:07:38,886 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:38,902 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-04 22:07:38,903 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-04 22:07:38,906 INFO  L87              Difference]: Start difference. First operand 171 states. Second operand 5 states.
[2020-09-04 22:07:39,409 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:39,410 INFO  L93              Difference]: Finished difference Result 360 states and 478 transitions.
[2020-09-04 22:07:39,410 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-04 22:07:39,412 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 12
[2020-09-04 22:07:39,413 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:39,429 INFO  L225             Difference]: With dead ends: 360
[2020-09-04 22:07:39,429 INFO  L226             Difference]: Without dead ends: 194
[2020-09-04 22:07:39,436 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-04 22:07:39,462 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 194 states.
[2020-09-04 22:07:39,511 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164.
[2020-09-04 22:07:39,513 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 164 states.
[2020-09-04 22:07:39,516 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions.
[2020-09-04 22:07:39,518 INFO  L78                 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 12
[2020-09-04 22:07:39,519 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:39,519 INFO  L479      AbstractCegarLoop]: Abstraction has 164 states and 174 transitions.
[2020-09-04 22:07:39,519 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-04 22:07:39,520 INFO  L276                IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions.
[2020-09-04 22:07:39,520 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-09-04 22:07:39,521 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:39,521 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:39,521 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-04 22:07:39,522 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:39,522 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:39,522 INFO  L82        PathProgramCache]: Analyzing trace with hash 684663316, now seen corresponding path program 1 times
[2020-09-04 22:07:39,523 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:39,523 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134781566]
[2020-09-04 22:07:39,523 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:39,548 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:39,598 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:39,601 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:39,620 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 22:07:39,624 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134781566]
[2020-09-04 22:07:39,624 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 22:07:39,624 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-04 22:07:39,624 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355604572]
[2020-09-04 22:07:39,626 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-04 22:07:39,627 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:39,627 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-04 22:07:39,628 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-04 22:07:39,628 INFO  L87              Difference]: Start difference. First operand 164 states and 174 transitions. Second operand 4 states.
[2020-09-04 22:07:39,947 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:39,947 INFO  L93              Difference]: Finished difference Result 170 states and 180 transitions.
[2020-09-04 22:07:39,948 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-04 22:07:39,948 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 24
[2020-09-04 22:07:39,948 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:39,951 INFO  L225             Difference]: With dead ends: 170
[2020-09-04 22:07:39,952 INFO  L226             Difference]: Without dead ends: 165
[2020-09-04 22:07:39,955 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-04 22:07:39,957 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 165 states.
[2020-09-04 22:07:39,993 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165.
[2020-09-04 22:07:39,994 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 165 states.
[2020-09-04 22:07:40,001 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions.
[2020-09-04 22:07:40,003 INFO  L78                 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 24
[2020-09-04 22:07:40,004 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:40,004 INFO  L479      AbstractCegarLoop]: Abstraction has 165 states and 175 transitions.
[2020-09-04 22:07:40,004 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-04 22:07:40,004 INFO  L276                IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions.
[2020-09-04 22:07:40,006 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-09-04 22:07:40,006 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:40,006 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:40,006 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-04 22:07:40,007 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:40,007 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:40,007 INFO  L82        PathProgramCache]: Analyzing trace with hash -265499727, now seen corresponding path program 1 times
[2020-09-04 22:07:40,008 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:40,008 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520628347]
[2020-09-04 22:07:40,008 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:40,069 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:40,171 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:40,174 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:40,182 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 22:07:40,182 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520628347]
[2020-09-04 22:07:40,183 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 22:07:40,183 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-04 22:07:40,183 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301856405]
[2020-09-04 22:07:40,184 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-04 22:07:40,184 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:40,184 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-04 22:07:40,185 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2020-09-04 22:07:40,185 INFO  L87              Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 8 states.
[2020-09-04 22:07:40,766 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:40,766 INFO  L93              Difference]: Finished difference Result 259 states and 276 transitions.
[2020-09-04 22:07:40,767 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-09-04 22:07:40,767 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 26
[2020-09-04 22:07:40,767 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:40,770 INFO  L225             Difference]: With dead ends: 259
[2020-09-04 22:07:40,770 INFO  L226             Difference]: Without dead ends: 254
[2020-09-04 22:07:40,771 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240
[2020-09-04 22:07:40,772 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 254 states.
[2020-09-04 22:07:40,797 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 159.
[2020-09-04 22:07:40,797 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 159 states.
[2020-09-04 22:07:40,798 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions.
[2020-09-04 22:07:40,799 INFO  L78                 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 26
[2020-09-04 22:07:40,799 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:40,799 INFO  L479      AbstractCegarLoop]: Abstraction has 159 states and 169 transitions.
[2020-09-04 22:07:40,799 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-04 22:07:40,799 INFO  L276                IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions.
[2020-09-04 22:07:40,801 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2020-09-04 22:07:40,801 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:40,801 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:40,803 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-04 22:07:40,806 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:40,806 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:40,806 INFO  L82        PathProgramCache]: Analyzing trace with hash 72562886, now seen corresponding path program 1 times
[2020-09-04 22:07:40,807 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:40,807 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981135748]
[2020-09-04 22:07:40,807 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:40,851 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:40,940 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:40,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:40,947 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 22:07:40,948 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981135748]
[2020-09-04 22:07:40,948 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 22:07:40,949 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-04 22:07:40,949 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938708902]
[2020-09-04 22:07:40,949 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-04 22:07:40,950 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:40,950 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-04 22:07:40,950 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-04 22:07:40,950 INFO  L87              Difference]: Start difference. First operand 159 states and 169 transitions. Second operand 6 states.
[2020-09-04 22:07:41,353 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:41,353 INFO  L93              Difference]: Finished difference Result 382 states and 407 transitions.
[2020-09-04 22:07:41,354 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-04 22:07:41,354 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 32
[2020-09-04 22:07:41,354 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:41,356 INFO  L225             Difference]: With dead ends: 382
[2020-09-04 22:07:41,356 INFO  L226             Difference]: Without dead ends: 253
[2020-09-04 22:07:41,360 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2020-09-04 22:07:41,361 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 253 states.
[2020-09-04 22:07:41,409 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 162.
[2020-09-04 22:07:41,409 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 162 states.
[2020-09-04 22:07:41,411 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions.
[2020-09-04 22:07:41,411 INFO  L78                 Accepts]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 32
[2020-09-04 22:07:41,412 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:41,412 INFO  L479      AbstractCegarLoop]: Abstraction has 162 states and 172 transitions.
[2020-09-04 22:07:41,412 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-04 22:07:41,412 INFO  L276                IsEmpty]: Start isEmpty. Operand 162 states and 172 transitions.
[2020-09-04 22:07:41,413 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2020-09-04 22:07:41,414 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:41,414 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:41,414 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-04 22:07:41,416 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:41,418 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:41,418 INFO  L82        PathProgramCache]: Analyzing trace with hash 972027235, now seen corresponding path program 1 times
[2020-09-04 22:07:41,419 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:41,419 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727427294]
[2020-09-04 22:07:41,419 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:41,453 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:41,517 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:41,518 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:41,527 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 22:07:41,527 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727427294]
[2020-09-04 22:07:41,528 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 22:07:41,528 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-09-04 22:07:41,528 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108751463]
[2020-09-04 22:07:41,529 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-04 22:07:41,530 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:41,530 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-04 22:07:41,531 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-09-04 22:07:41,531 INFO  L87              Difference]: Start difference. First operand 162 states and 172 transitions. Second operand 7 states.
[2020-09-04 22:07:41,896 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:41,896 INFO  L93              Difference]: Finished difference Result 271 states and 288 transitions.
[2020-09-04 22:07:41,896 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-04 22:07:41,897 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 34
[2020-09-04 22:07:41,897 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:41,899 INFO  L225             Difference]: With dead ends: 271
[2020-09-04 22:07:41,899 INFO  L226             Difference]: Without dead ends: 239
[2020-09-04 22:07:41,899 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90
[2020-09-04 22:07:41,900 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 239 states.
[2020-09-04 22:07:41,921 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 161.
[2020-09-04 22:07:41,922 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 161 states.
[2020-09-04 22:07:41,922 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 171 transitions.
[2020-09-04 22:07:41,923 INFO  L78                 Accepts]: Start accepts. Automaton has 161 states and 171 transitions. Word has length 34
[2020-09-04 22:07:41,923 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:41,923 INFO  L479      AbstractCegarLoop]: Abstraction has 161 states and 171 transitions.
[2020-09-04 22:07:41,923 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-04 22:07:41,924 INFO  L276                IsEmpty]: Start isEmpty. Operand 161 states and 171 transitions.
[2020-09-04 22:07:41,925 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2020-09-04 22:07:41,925 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:41,925 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:41,925 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-04 22:07:41,925 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:41,926 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:41,926 INFO  L82        PathProgramCache]: Analyzing trace with hash -401575995, now seen corresponding path program 1 times
[2020-09-04 22:07:41,926 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:41,926 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628977793]
[2020-09-04 22:07:41,927 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:41,945 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:42,002 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:42,003 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:42,011 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 22:07:42,012 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628977793]
[2020-09-04 22:07:42,013 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 22:07:42,013 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-09-04 22:07:42,013 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589222445]
[2020-09-04 22:07:42,014 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-04 22:07:42,015 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:42,015 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-04 22:07:42,016 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-09-04 22:07:42,016 INFO  L87              Difference]: Start difference. First operand 161 states and 171 transitions. Second operand 7 states.
[2020-09-04 22:07:42,543 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:42,543 INFO  L93              Difference]: Finished difference Result 245 states and 261 transitions.
[2020-09-04 22:07:42,544 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-09-04 22:07:42,544 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 38
[2020-09-04 22:07:42,544 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:42,546 INFO  L225             Difference]: With dead ends: 245
[2020-09-04 22:07:42,546 INFO  L226             Difference]: Without dead ends: 241
[2020-09-04 22:07:42,546 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156
[2020-09-04 22:07:42,548 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 241 states.
[2020-09-04 22:07:42,575 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 157.
[2020-09-04 22:07:42,576 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 157 states.
[2020-09-04 22:07:42,577 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions.
[2020-09-04 22:07:42,577 INFO  L78                 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 38
[2020-09-04 22:07:42,578 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:42,578 INFO  L479      AbstractCegarLoop]: Abstraction has 157 states and 167 transitions.
[2020-09-04 22:07:42,578 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-04 22:07:42,578 INFO  L276                IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions.
[2020-09-04 22:07:42,583 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2020-09-04 22:07:42,583 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:42,583 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:42,583 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-04 22:07:42,584 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:42,584 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:42,584 INFO  L82        PathProgramCache]: Analyzing trace with hash 1938604912, now seen corresponding path program 1 times
[2020-09-04 22:07:42,584 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:42,585 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278093829]
[2020-09-04 22:07:42,585 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:42,617 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:42,674 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:42,675 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:42,681 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 22:07:42,682 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278093829]
[2020-09-04 22:07:42,683 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 22:07:42,683 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-04 22:07:42,683 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121828914]
[2020-09-04 22:07:42,684 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-04 22:07:42,684 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:42,684 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-04 22:07:42,687 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-04 22:07:42,689 INFO  L87              Difference]: Start difference. First operand 157 states and 167 transitions. Second operand 4 states.
[2020-09-04 22:07:42,930 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:42,931 INFO  L93              Difference]: Finished difference Result 267 states and 287 transitions.
[2020-09-04 22:07:42,931 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-04 22:07:42,931 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 42
[2020-09-04 22:07:42,932 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:42,934 INFO  L225             Difference]: With dead ends: 267
[2020-09-04 22:07:42,936 INFO  L226             Difference]: Without dead ends: 196
[2020-09-04 22:07:42,937 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-04 22:07:42,938 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 196 states.
[2020-09-04 22:07:42,957 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 160.
[2020-09-04 22:07:42,957 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 160 states.
[2020-09-04 22:07:42,958 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions.
[2020-09-04 22:07:42,959 INFO  L78                 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 42
[2020-09-04 22:07:42,961 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:42,961 INFO  L479      AbstractCegarLoop]: Abstraction has 160 states and 171 transitions.
[2020-09-04 22:07:42,961 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-04 22:07:42,961 INFO  L276                IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions.
[2020-09-04 22:07:42,968 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2020-09-04 22:07:42,968 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:42,969 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:42,969 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-09-04 22:07:42,969 INFO  L427      AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:42,970 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:42,970 INFO  L82        PathProgramCache]: Analyzing trace with hash -1017153069, now seen corresponding path program 1 times
[2020-09-04 22:07:42,970 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:42,971 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800630828]
[2020-09-04 22:07:42,971 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:42,996 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:43,031 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:43,032 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:43,037 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 22:07:43,037 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800630828]
[2020-09-04 22:07:43,038 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 22:07:43,038 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-04 22:07:43,038 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857920339]
[2020-09-04 22:07:43,039 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-04 22:07:43,039 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:43,039 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-04 22:07:43,039 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-04 22:07:43,040 INFO  L87              Difference]: Start difference. First operand 160 states and 171 transitions. Second operand 4 states.
[2020-09-04 22:07:43,264 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:43,265 INFO  L93              Difference]: Finished difference Result 160 states and 171 transitions.
[2020-09-04 22:07:43,265 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-04 22:07:43,265 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 44
[2020-09-04 22:07:43,266 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:43,267 INFO  L225             Difference]: With dead ends: 160
[2020-09-04 22:07:43,267 INFO  L226             Difference]: Without dead ends: 158
[2020-09-04 22:07:43,267 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-04 22:07:43,268 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 158 states.
[2020-09-04 22:07:43,285 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158.
[2020-09-04 22:07:43,285 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 158 states.
[2020-09-04 22:07:43,286 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions.
[2020-09-04 22:07:43,286 INFO  L78                 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 44
[2020-09-04 22:07:43,287 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:43,287 INFO  L479      AbstractCegarLoop]: Abstraction has 158 states and 169 transitions.
[2020-09-04 22:07:43,287 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-04 22:07:43,287 INFO  L276                IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions.
[2020-09-04 22:07:43,290 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2020-09-04 22:07:43,290 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:43,290 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:43,290 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-09-04 22:07:43,291 INFO  L427      AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:43,291 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:43,291 INFO  L82        PathProgramCache]: Analyzing trace with hash -1203451366, now seen corresponding path program 1 times
[2020-09-04 22:07:43,292 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:43,292 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216697284]
[2020-09-04 22:07:43,292 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:43,321 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:43,524 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:43,525 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:43,542 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 22:07:43,542 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216697284]
[2020-09-04 22:07:43,542 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 22:07:43,543 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-09-04 22:07:43,551 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101952102]
[2020-09-04 22:07:43,553 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-04 22:07:43,553 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:43,554 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-04 22:07:43,554 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2020-09-04 22:07:43,555 INFO  L87              Difference]: Start difference. First operand 158 states and 169 transitions. Second operand 11 states.
[2020-09-04 22:07:44,549 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:44,550 INFO  L93              Difference]: Finished difference Result 398 states and 427 transitions.
[2020-09-04 22:07:44,550 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-09-04 22:07:44,550 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 48
[2020-09-04 22:07:44,551 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:44,553 INFO  L225             Difference]: With dead ends: 398
[2020-09-04 22:07:44,553 INFO  L226             Difference]: Without dead ends: 326
[2020-09-04 22:07:44,554 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552
[2020-09-04 22:07:44,555 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 326 states.
[2020-09-04 22:07:44,578 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 204.
[2020-09-04 22:07:44,578 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 204 states.
[2020-09-04 22:07:44,579 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 220 transitions.
[2020-09-04 22:07:44,579 INFO  L78                 Accepts]: Start accepts. Automaton has 204 states and 220 transitions. Word has length 48
[2020-09-04 22:07:44,580 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:44,580 INFO  L479      AbstractCegarLoop]: Abstraction has 204 states and 220 transitions.
[2020-09-04 22:07:44,580 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-04 22:07:44,580 INFO  L276                IsEmpty]: Start isEmpty. Operand 204 states and 220 transitions.
[2020-09-04 22:07:44,581 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-09-04 22:07:44,581 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:44,581 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:44,581 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-09-04 22:07:44,582 INFO  L427      AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:44,582 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:44,582 INFO  L82        PathProgramCache]: Analyzing trace with hash 2069783995, now seen corresponding path program 1 times
[2020-09-04 22:07:44,582 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:44,583 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602789615]
[2020-09-04 22:07:44,583 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:44,598 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:44,627 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:44,629 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:44,634 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 22:07:44,634 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602789615]
[2020-09-04 22:07:44,634 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 22:07:44,635 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-04 22:07:44,635 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982807496]
[2020-09-04 22:07:44,635 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-04 22:07:44,635 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:44,636 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-04 22:07:44,636 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-04 22:07:44,636 INFO  L87              Difference]: Start difference. First operand 204 states and 220 transitions. Second operand 4 states.
[2020-09-04 22:07:44,860 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:44,861 INFO  L93              Difference]: Finished difference Result 211 states and 228 transitions.
[2020-09-04 22:07:44,861 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-04 22:07:44,861 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 52
[2020-09-04 22:07:44,862 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:44,863 INFO  L225             Difference]: With dead ends: 211
[2020-09-04 22:07:44,863 INFO  L226             Difference]: Without dead ends: 206
[2020-09-04 22:07:44,864 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-04 22:07:44,865 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 206 states.
[2020-09-04 22:07:44,885 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206.
[2020-09-04 22:07:44,886 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 206 states.
[2020-09-04 22:07:44,887 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 222 transitions.
[2020-09-04 22:07:44,887 INFO  L78                 Accepts]: Start accepts. Automaton has 206 states and 222 transitions. Word has length 52
[2020-09-04 22:07:44,888 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:44,888 INFO  L479      AbstractCegarLoop]: Abstraction has 206 states and 222 transitions.
[2020-09-04 22:07:44,888 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-04 22:07:44,888 INFO  L276                IsEmpty]: Start isEmpty. Operand 206 states and 222 transitions.
[2020-09-04 22:07:44,889 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2020-09-04 22:07:44,889 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:44,889 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:44,889 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-09-04 22:07:44,889 INFO  L427      AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:44,890 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:44,890 INFO  L82        PathProgramCache]: Analyzing trace with hash -1565892499, now seen corresponding path program 1 times
[2020-09-04 22:07:44,890 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:44,890 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006398992]
[2020-09-04 22:07:44,890 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:44,917 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:45,349 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:45,350 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:45,374 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 22:07:45,374 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006398992]
[2020-09-04 22:07:45,374 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 22:07:45,375 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2020-09-04 22:07:45,375 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649601303]
[2020-09-04 22:07:45,376 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-09-04 22:07:45,377 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:45,377 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-09-04 22:07:45,377 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182
[2020-09-04 22:07:45,378 INFO  L87              Difference]: Start difference. First operand 206 states and 222 transitions. Second operand 14 states.
[2020-09-04 22:07:47,752 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:47,752 INFO  L93              Difference]: Finished difference Result 636 states and 681 transitions.
[2020-09-04 22:07:47,753 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2020-09-04 22:07:47,753 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 53
[2020-09-04 22:07:47,754 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:47,759 INFO  L225             Difference]: With dead ends: 636
[2020-09-04 22:07:47,759 INFO  L226             Difference]: Without dead ends: 633
[2020-09-04 22:07:47,760 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056
[2020-09-04 22:07:47,762 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 633 states.
[2020-09-04 22:07:47,799 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 225.
[2020-09-04 22:07:47,799 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 225 states.
[2020-09-04 22:07:47,800 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 243 transitions.
[2020-09-04 22:07:47,800 INFO  L78                 Accepts]: Start accepts. Automaton has 225 states and 243 transitions. Word has length 53
[2020-09-04 22:07:47,801 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:47,801 INFO  L479      AbstractCegarLoop]: Abstraction has 225 states and 243 transitions.
[2020-09-04 22:07:47,801 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-09-04 22:07:47,801 INFO  L276                IsEmpty]: Start isEmpty. Operand 225 states and 243 transitions.
[2020-09-04 22:07:47,802 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2020-09-04 22:07:47,802 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:47,802 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:47,802 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2020-09-04 22:07:47,803 INFO  L427      AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:47,803 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:47,803 INFO  L82        PathProgramCache]: Analyzing trace with hash 991929043, now seen corresponding path program 1 times
[2020-09-04 22:07:47,803 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:47,803 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112713338]
[2020-09-04 22:07:47,804 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:47,816 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:47,900 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:47,901 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:47,914 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-04 22:07:47,915 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112713338]
[2020-09-04 22:07:47,915 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 22:07:47,915 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-04 22:07:47,916 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828796330]
[2020-09-04 22:07:47,916 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-04 22:07:47,916 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:47,917 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-04 22:07:47,917 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-09-04 22:07:47,917 INFO  L87              Difference]: Start difference. First operand 225 states and 243 transitions. Second operand 8 states.
[2020-09-04 22:07:48,503 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:48,504 INFO  L93              Difference]: Finished difference Result 321 states and 346 transitions.
[2020-09-04 22:07:48,504 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-09-04 22:07:48,504 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 53
[2020-09-04 22:07:48,504 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:48,506 INFO  L225             Difference]: With dead ends: 321
[2020-09-04 22:07:48,506 INFO  L226             Difference]: Without dead ends: 291
[2020-09-04 22:07:48,507 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2020-09-04 22:07:48,507 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 291 states.
[2020-09-04 22:07:48,559 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 275.
[2020-09-04 22:07:48,559 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 275 states.
[2020-09-04 22:07:48,561 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 301 transitions.
[2020-09-04 22:07:48,562 INFO  L78                 Accepts]: Start accepts. Automaton has 275 states and 301 transitions. Word has length 53
[2020-09-04 22:07:48,562 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:48,562 INFO  L479      AbstractCegarLoop]: Abstraction has 275 states and 301 transitions.
[2020-09-04 22:07:48,562 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-04 22:07:48,562 INFO  L276                IsEmpty]: Start isEmpty. Operand 275 states and 301 transitions.
[2020-09-04 22:07:48,563 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2020-09-04 22:07:48,563 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:48,564 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:48,564 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2020-09-04 22:07:48,564 INFO  L427      AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:48,564 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:48,565 INFO  L82        PathProgramCache]: Analyzing trace with hash -604385608, now seen corresponding path program 1 times
[2020-09-04 22:07:48,565 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:48,565 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628503006]
[2020-09-04 22:07:48,565 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:48,583 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:48,669 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:48,670 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:48,676 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 22:07:48,676 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628503006]
[2020-09-04 22:07:48,676 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 22:07:48,676 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-04 22:07:48,677 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917300266]
[2020-09-04 22:07:48,677 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-04 22:07:48,677 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:48,678 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-04 22:07:48,678 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2020-09-04 22:07:48,678 INFO  L87              Difference]: Start difference. First operand 275 states and 301 transitions. Second operand 8 states.
[2020-09-04 22:07:49,209 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:49,209 INFO  L93              Difference]: Finished difference Result 294 states and 322 transitions.
[2020-09-04 22:07:49,210 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-09-04 22:07:49,210 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 54
[2020-09-04 22:07:49,210 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:49,211 INFO  L225             Difference]: With dead ends: 294
[2020-09-04 22:07:49,212 INFO  L226             Difference]: Without dead ends: 289
[2020-09-04 22:07:49,212 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182
[2020-09-04 22:07:49,213 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 289 states.
[2020-09-04 22:07:49,247 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 268.
[2020-09-04 22:07:49,248 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 268 states.
[2020-09-04 22:07:49,249 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 293 transitions.
[2020-09-04 22:07:49,249 INFO  L78                 Accepts]: Start accepts. Automaton has 268 states and 293 transitions. Word has length 54
[2020-09-04 22:07:49,250 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:49,250 INFO  L479      AbstractCegarLoop]: Abstraction has 268 states and 293 transitions.
[2020-09-04 22:07:49,250 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-04 22:07:49,250 INFO  L276                IsEmpty]: Start isEmpty. Operand 268 states and 293 transitions.
[2020-09-04 22:07:49,251 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2020-09-04 22:07:49,251 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:49,251 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:49,251 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2020-09-04 22:07:49,251 INFO  L427      AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:49,252 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:49,252 INFO  L82        PathProgramCache]: Analyzing trace with hash -1636675303, now seen corresponding path program 1 times
[2020-09-04 22:07:49,252 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:49,252 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202327987]
[2020-09-04 22:07:49,253 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:49,272 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:49,554 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:49,555 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:49,578 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 22:07:49,579 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202327987]
[2020-09-04 22:07:49,579 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 22:07:49,579 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2020-09-04 22:07:49,580 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387297235]
[2020-09-04 22:07:49,580 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-09-04 22:07:49,580 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:49,581 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-09-04 22:07:49,581 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210
[2020-09-04 22:07:49,581 INFO  L87              Difference]: Start difference. First operand 268 states and 293 transitions. Second operand 15 states.
[2020-09-04 22:07:51,606 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:51,606 INFO  L93              Difference]: Finished difference Result 722 states and 782 transitions.
[2020-09-04 22:07:51,607 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2020-09-04 22:07:51,607 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 57
[2020-09-04 22:07:51,607 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:51,611 INFO  L225             Difference]: With dead ends: 722
[2020-09-04 22:07:51,611 INFO  L226             Difference]: Without dead ends: 719
[2020-09-04 22:07:51,614 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=272, Invalid=850, Unknown=0, NotChecked=0, Total=1122
[2020-09-04 22:07:51,615 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 719 states.
[2020-09-04 22:07:51,687 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 272.
[2020-09-04 22:07:51,688 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 272 states.
[2020-09-04 22:07:51,689 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 297 transitions.
[2020-09-04 22:07:51,689 INFO  L78                 Accepts]: Start accepts. Automaton has 272 states and 297 transitions. Word has length 57
[2020-09-04 22:07:51,690 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:51,690 INFO  L479      AbstractCegarLoop]: Abstraction has 272 states and 297 transitions.
[2020-09-04 22:07:51,690 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-09-04 22:07:51,690 INFO  L276                IsEmpty]: Start isEmpty. Operand 272 states and 297 transitions.
[2020-09-04 22:07:51,690 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2020-09-04 22:07:51,691 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:51,691 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:51,691 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2020-09-04 22:07:51,691 INFO  L427      AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:51,691 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:51,691 INFO  L82        PathProgramCache]: Analyzing trace with hash -1939208096, now seen corresponding path program 1 times
[2020-09-04 22:07:51,692 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:51,692 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685118300]
[2020-09-04 22:07:51,692 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:51,704 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:51,747 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:51,749 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:51,754 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-04 22:07:51,754 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685118300]
[2020-09-04 22:07:51,754 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 22:07:51,754 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-04 22:07:51,755 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108818521]
[2020-09-04 22:07:51,755 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-04 22:07:51,755 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:51,755 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-04 22:07:51,756 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-04 22:07:51,756 INFO  L87              Difference]: Start difference. First operand 272 states and 297 transitions. Second operand 4 states.
[2020-09-04 22:07:52,064 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:52,065 INFO  L93              Difference]: Finished difference Result 277 states and 302 transitions.
[2020-09-04 22:07:52,065 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-04 22:07:52,066 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 58
[2020-09-04 22:07:52,066 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:52,068 INFO  L225             Difference]: With dead ends: 277
[2020-09-04 22:07:52,068 INFO  L226             Difference]: Without dead ends: 275
[2020-09-04 22:07:52,069 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-04 22:07:52,069 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 275 states.
[2020-09-04 22:07:52,124 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 270.
[2020-09-04 22:07:52,125 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 270 states.
[2020-09-04 22:07:52,126 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 295 transitions.
[2020-09-04 22:07:52,126 INFO  L78                 Accepts]: Start accepts. Automaton has 270 states and 295 transitions. Word has length 58
[2020-09-04 22:07:52,126 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:52,126 INFO  L479      AbstractCegarLoop]: Abstraction has 270 states and 295 transitions.
[2020-09-04 22:07:52,127 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-04 22:07:52,127 INFO  L276                IsEmpty]: Start isEmpty. Operand 270 states and 295 transitions.
[2020-09-04 22:07:52,127 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2020-09-04 22:07:52,128 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:52,128 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:52,128 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2020-09-04 22:07:52,128 INFO  L427      AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:52,129 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:52,129 INFO  L82        PathProgramCache]: Analyzing trace with hash 1792411396, now seen corresponding path program 1 times
[2020-09-04 22:07:52,129 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:52,129 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228900953]
[2020-09-04 22:07:52,129 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:52,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:52,222 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:52,223 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:52,236 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 22:07:52,237 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228900953]
[2020-09-04 22:07:52,237 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-04 22:07:52,237 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-04 22:07:52,237 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811538860]
[2020-09-04 22:07:52,238 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-04 22:07:52,238 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:52,238 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-04 22:07:52,238 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-09-04 22:07:52,239 INFO  L87              Difference]: Start difference. First operand 270 states and 295 transitions. Second operand 7 states.
[2020-09-04 22:07:52,821 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:52,821 INFO  L93              Difference]: Finished difference Result 421 states and 458 transitions.
[2020-09-04 22:07:52,822 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-09-04 22:07:52,822 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 59
[2020-09-04 22:07:52,823 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:52,824 INFO  L225             Difference]: With dead ends: 421
[2020-09-04 22:07:52,824 INFO  L226             Difference]: Without dead ends: 312
[2020-09-04 22:07:52,825 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110
[2020-09-04 22:07:52,826 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 312 states.
[2020-09-04 22:07:52,874 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 270.
[2020-09-04 22:07:52,874 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 270 states.
[2020-09-04 22:07:52,875 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 293 transitions.
[2020-09-04 22:07:52,875 INFO  L78                 Accepts]: Start accepts. Automaton has 270 states and 293 transitions. Word has length 59
[2020-09-04 22:07:52,876 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:52,876 INFO  L479      AbstractCegarLoop]: Abstraction has 270 states and 293 transitions.
[2020-09-04 22:07:52,876 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-04 22:07:52,876 INFO  L276                IsEmpty]: Start isEmpty. Operand 270 states and 293 transitions.
[2020-09-04 22:07:52,877 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2020-09-04 22:07:52,877 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:52,877 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:52,877 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2020-09-04 22:07:52,878 INFO  L427      AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:52,878 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:52,878 INFO  L82        PathProgramCache]: Analyzing trace with hash -984681049, now seen corresponding path program 1 times
[2020-09-04 22:07:52,878 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:52,879 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88746626]
[2020-09-04 22:07:52,879 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:52,897 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:53,081 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:53,083 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:53,092 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 22:07:53,092 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88746626]
[2020-09-04 22:07:53,093 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 22:07:53,093 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2020-09-04 22:07:53,093 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661235838]
[2020-09-04 22:07:53,094 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-09-04 22:07:53,094 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:53,094 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-09-04 22:07:53,094 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156
[2020-09-04 22:07:53,094 INFO  L87              Difference]: Start difference. First operand 270 states and 293 transitions. Second operand 13 states.
[2020-09-04 22:07:54,345 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:54,346 INFO  L93              Difference]: Finished difference Result 564 states and 600 transitions.
[2020-09-04 22:07:54,346 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-09-04 22:07:54,346 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 62
[2020-09-04 22:07:54,347 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:54,349 INFO  L225             Difference]: With dead ends: 564
[2020-09-04 22:07:54,349 INFO  L226             Difference]: Without dead ends: 508
[2020-09-04 22:07:54,349 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552
[2020-09-04 22:07:54,350 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 508 states.
[2020-09-04 22:07:54,404 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 279.
[2020-09-04 22:07:54,404 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 279 states.
[2020-09-04 22:07:54,405 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 301 transitions.
[2020-09-04 22:07:54,405 INFO  L78                 Accepts]: Start accepts. Automaton has 279 states and 301 transitions. Word has length 62
[2020-09-04 22:07:54,406 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:54,406 INFO  L479      AbstractCegarLoop]: Abstraction has 279 states and 301 transitions.
[2020-09-04 22:07:54,406 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-09-04 22:07:54,406 INFO  L276                IsEmpty]: Start isEmpty. Operand 279 states and 301 transitions.
[2020-09-04 22:07:54,407 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2020-09-04 22:07:54,407 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:54,407 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:54,407 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2020-09-04 22:07:54,407 INFO  L427      AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:54,408 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:54,408 INFO  L82        PathProgramCache]: Analyzing trace with hash -649286859, now seen corresponding path program 1 times
[2020-09-04 22:07:54,408 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:54,408 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176696612]
[2020-09-04 22:07:54,409 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:54,423 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:54,455 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:54,456 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:54,460 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 22:07:54,461 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176696612]
[2020-09-04 22:07:54,461 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 22:07:54,461 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-04 22:07:54,461 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150678759]
[2020-09-04 22:07:54,462 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-04 22:07:54,462 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:54,462 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-04 22:07:54,463 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-04 22:07:54,463 INFO  L87              Difference]: Start difference. First operand 279 states and 301 transitions. Second operand 4 states.
[2020-09-04 22:07:54,850 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:54,851 INFO  L93              Difference]: Finished difference Result 457 states and 503 transitions.
[2020-09-04 22:07:54,851 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-04 22:07:54,851 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 64
[2020-09-04 22:07:54,852 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:54,853 INFO  L225             Difference]: With dead ends: 457
[2020-09-04 22:07:54,853 INFO  L226             Difference]: Without dead ends: 360
[2020-09-04 22:07:54,854 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-04 22:07:54,855 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 360 states.
[2020-09-04 22:07:54,928 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 312.
[2020-09-04 22:07:54,928 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 312 states.
[2020-09-04 22:07:54,929 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 340 transitions.
[2020-09-04 22:07:54,930 INFO  L78                 Accepts]: Start accepts. Automaton has 312 states and 340 transitions. Word has length 64
[2020-09-04 22:07:54,930 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:54,930 INFO  L479      AbstractCegarLoop]: Abstraction has 312 states and 340 transitions.
[2020-09-04 22:07:54,930 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-04 22:07:54,930 INFO  L276                IsEmpty]: Start isEmpty. Operand 312 states and 340 transitions.
[2020-09-04 22:07:54,931 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-09-04 22:07:54,931 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:54,931 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:54,932 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2020-09-04 22:07:54,932 INFO  L427      AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:54,932 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:54,932 INFO  L82        PathProgramCache]: Analyzing trace with hash -201437452, now seen corresponding path program 1 times
[2020-09-04 22:07:54,932 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:54,932 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475075421]
[2020-09-04 22:07:54,933 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:54,944 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:55,068 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 22:07:55,069 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 22:07:55,083 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 22:07:55,084 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475075421]
[2020-09-04 22:07:55,084 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-04 22:07:55,084 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-09-04 22:07:55,085 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168255098]
[2020-09-04 22:07:55,085 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-04 22:07:55,086 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 22:07:55,086 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-04 22:07:55,086 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90
[2020-09-04 22:07:55,086 INFO  L87              Difference]: Start difference. First operand 312 states and 340 transitions. Second operand 10 states.
[2020-09-04 22:07:56,055 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 22:07:56,055 INFO  L93              Difference]: Finished difference Result 499 states and 541 transitions.
[2020-09-04 22:07:56,056 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-09-04 22:07:56,056 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 67
[2020-09-04 22:07:56,057 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 22:07:56,060 INFO  L225             Difference]: With dead ends: 499
[2020-09-04 22:07:56,060 INFO  L226             Difference]: Without dead ends: 439
[2020-09-04 22:07:56,061 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306
[2020-09-04 22:07:56,062 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 439 states.
[2020-09-04 22:07:56,210 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 343.
[2020-09-04 22:07:56,211 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 343 states.
[2020-09-04 22:07:56,213 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 382 transitions.
[2020-09-04 22:07:56,214 INFO  L78                 Accepts]: Start accepts. Automaton has 343 states and 382 transitions. Word has length 67
[2020-09-04 22:07:56,214 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 22:07:56,214 INFO  L479      AbstractCegarLoop]: Abstraction has 343 states and 382 transitions.
[2020-09-04 22:07:56,215 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-04 22:07:56,215 INFO  L276                IsEmpty]: Start isEmpty. Operand 343 states and 382 transitions.
[2020-09-04 22:07:56,216 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 74
[2020-09-04 22:07:56,217 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 22:07:56,217 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 22:07:56,217 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2020-09-04 22:07:56,218 INFO  L427      AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 22:07:56,218 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 22:07:56,218 INFO  L82        PathProgramCache]: Analyzing trace with hash 364568229, now seen corresponding path program 1 times
[2020-09-04 22:07:56,219 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 22:07:56,219 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279829187]
[2020-09-04 22:07:56,219 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 22:07:56,244 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-04 22:07:56,244 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-09-04 22:07:56,266 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-04 22:07:56,267 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-09-04 22:07:56,322 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-04 22:07:56,323 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-09-04 22:07:56,323 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2020-09-04 22:07:56,417 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 10:07:56 BoogieIcfgContainer
[2020-09-04 22:07:56,417 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-04 22:07:56,425 INFO  L168              Benchmark]: Toolchain (without parser) took 19742.28 ms. Allocated memory was 136.3 MB in the beginning and 478.7 MB in the end (delta: 342.4 MB). Free memory was 99.6 MB in the beginning and 100.4 MB in the end (delta: -871.7 kB). Peak memory consumption was 341.5 MB. Max. memory is 7.1 GB.
[2020-09-04 22:07:56,429 INFO  L168              Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 136.3 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-04 22:07:56,430 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 788.01 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 99.3 MB in the beginning and 168.1 MB in the end (delta: -68.7 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB.
[2020-09-04 22:07:56,431 INFO  L168              Benchmark]: Boogie Preprocessor took 90.28 ms. Allocated memory is still 200.8 MB. Free memory was 168.1 MB in the beginning and 164.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB.
[2020-09-04 22:07:56,434 INFO  L168              Benchmark]: RCFGBuilder took 885.10 ms. Allocated memory is still 200.8 MB. Free memory was 164.4 MB in the beginning and 101.6 MB in the end (delta: 62.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB.
[2020-09-04 22:07:56,435 INFO  L168              Benchmark]: TraceAbstraction took 17969.56 ms. Allocated memory was 200.8 MB in the beginning and 478.7 MB in the end (delta: 277.9 MB). Free memory was 100.9 MB in the beginning and 100.4 MB in the end (delta: 489.0 kB). Peak memory consumption was 278.4 MB. Max. memory is 7.1 GB.
[2020-09-04 22:07:56,444 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.26 ms. Allocated memory is still 136.3 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 788.01 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 99.3 MB in the beginning and 168.1 MB in the end (delta: -68.7 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 90.28 ms. Allocated memory is still 200.8 MB. Free memory was 168.1 MB in the beginning and 164.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 885.10 ms. Allocated memory is still 200.8 MB. Free memory was 164.4 MB in the beginning and 101.6 MB in the end (delta: 62.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 17969.56 ms. Allocated memory was 200.8 MB in the beginning and 478.7 MB in the end (delta: 277.9 MB). Free memory was 100.9 MB in the beginning and 100.4 MB in the end (delta: 489.0 kB). Peak memory consumption was 278.4 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L991]               SLL* list = malloc(sizeof(SLL));
         VAL         [list={-1:0}, malloc(sizeof(SLL))={-1:0}]
[L992]               list->next = ((void*)0)
         VAL         [list={-1:0}, malloc(sizeof(SLL))={-1:0}]
[L993]   COND FALSE  !(!(list != ((void*)0)))
         VAL         [list={-1:0}, malloc(sizeof(SLL))={-1:0}]
[L993]   COND FALSE  !(__VERIFIER_nondet_int())
         VAL         [__VERIFIER_nondet_int()=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}]
[L993]               list->inner = malloc(sizeof(SLL))
         VAL         [list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L993]   EXPR        list->inner
         VAL         [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L993]               list->inner->next = ((void*)0)
         VAL         [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L993]   EXPR        list->inner
         VAL         [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L993]               list->inner->inner = ((void*)0)
         VAL         [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L993]   EXPR        list->inner
         VAL         [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L993]   EXPR        list->inner != ((void*)0) || list->inner == ((void*)0)
         VAL         [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L993]   COND FALSE  !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
         VAL         [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L995]               SLL* end = list;
         VAL         [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L998]   COND FALSE  !(__VERIFIER_nondet_int())
         VAL         [__VERIFIER_nondet_int()=0, end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1008]              end = ((void*)0)
         VAL         [end={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1009]              end = list
         VAL         [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1012]  COND FALSE  !(!(((void*)0) != end))
         VAL         [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1014]  COND TRUE   ((void*)0) != end
         VAL         [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1016]              int len = 0;
         VAL         [end={-1:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1017]  EXPR        end->inner
         VAL         [end={-1:0}, end->inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1017]              SLL* inner = end->inner;
         VAL         [end={-1:0}, end->inner={-2:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1018]  COND TRUE   ((void*)0) != inner
         VAL         [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1020]  COND TRUE   len == 0
         VAL         [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1021]              len = 1
         VAL         [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1024]  COND FALSE  !(!(((void*)0) != inner))
         VAL         [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1025]  EXPR        inner->inner
         VAL         [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1025]  COND FALSE  !(!(((void*)0) == inner->inner))
         VAL         [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1026]  EXPR        inner->next
         VAL         [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1026]  COND FALSE  !(!(((void*)0) == inner->next))
         VAL         [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1027]  EXPR        inner->inner
         VAL         [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1027]              inner = inner->inner
         VAL         [end={-1:0}, inner={0:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1028]  COND TRUE   len == 1
         VAL         [end={-1:0}, inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1029]  EXPR        inner->inner
         VAL         [end={-1:0}, inner={0:0}, inner->inner={10:3}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1029]              inner = inner->inner
         VAL         [end={-1:0}, inner={10:3}, inner->inner={10:3}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1018]  COND TRUE   ((void*)0) != inner
         VAL         [end={-1:0}, inner={10:3}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1020]  COND FALSE  !(len == 0)
         VAL         [end={-1:0}, inner={10:3}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1023]              len = 2
         VAL         [end={-1:0}, inner={10:3}, len=2, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1024]  COND FALSE  !(!(((void*)0) != inner))
         VAL         [end={-1:0}, inner={10:3}, len=2, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1025]  EXPR        inner->inner
         VAL         [end={-1:0}, inner={10:3}, inner->inner={11:12}, len=2, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1025]  COND TRUE   !(((void*)0) == inner->inner)
         VAL         [end={-1:0}, inner={10:3}, inner->inner={11:12}, len=2, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]
[L1025]              __VERIFIER_error()
         VAL         [end={-1:0}, inner={10:3}, len=2, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.7s, OverallIterations: 20, TraceHistogramMax: 2, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3219 SDtfs, 6553 SDslu, 10820 SDs, 0 SdLazy, 7106 SolverSat, 245 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 272 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=343occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 19 MinimizatonAttempts, 1848 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 952 NumberOfCodeBlocks, 952 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 860 ConstructedInterpolants, 0 QuantifiedInterpolants, 314476 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 17 PerfectInterpolantSequences, 13/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...