/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-01-1.i
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-d623d84
[2020-07-20 21:54:51,321 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-20 21:54:51,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 21:54:51,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 21:54:51,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 21:54:51,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 21:54:51,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 21:54:51,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 21:54:51,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 21:54:51,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 21:54:51,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 21:54:51,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 21:54:51,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 21:54:51,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 21:54:51,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 21:54:51,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 21:54:51,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 21:54:51,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 21:54:51,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 21:54:51,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 21:54:51,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 21:54:51,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 21:54:51,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 21:54:51,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 21:54:51,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 21:54:51,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 21:54:51,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 21:54:51,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 21:54:51,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 21:54:51,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 21:54:51,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 21:54:51,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 21:54:51,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 21:54:51,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 21:54:51,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 21:54:51,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 21:54:51,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-20 21:54:51,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-20 21:54:51,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-20 21:54:51,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-20 21:54:51,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 21:54:51,426 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-07-20 21:54:51,453 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-20 21:54:51,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 21:54:51,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 21:54:51,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-20 21:54:51,458 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-20 21:54:51,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 21:54:51,458 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-20 21:54:51,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-20 21:54:51,459 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-20 21:54:51,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-20 21:54:51,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 21:54:51,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 21:54:51,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 21:54:51,461 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-20 21:54:51,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-20 21:54:51,461 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-20 21:54:51,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-20 21:54:51,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 21:54:51,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-20 21:54:51,462 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-20 21:54:51,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-20 21:54:51,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 21:54:51,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 21:54:51,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 21:54:51,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 21:54:51,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-20 21:54:51,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:51,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 21:54:51,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-20 21:54:51,464 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4
[2020-07-20 21:54:51,821 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 21:54:51,839 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 21:54:51,842 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 21:54:51,844 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-20 21:54:51,844 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-20 21:54:51,845 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i
[2020-07-20 21:54:51,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d36252024/5631c6632c2542168759318c3bda9f3c/FLAGd9e7570e3
[2020-07-20 21:54:52,627 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-20 21:54:52,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i
[2020-07-20 21:54:52,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d36252024/5631c6632c2542168759318c3bda9f3c/FLAGd9e7570e3
[2020-07-20 21:54:52,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d36252024/5631c6632c2542168759318c3bda9f3c
[2020-07-20 21:54:52,870 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 21:54:52,873 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 21:54:52,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 21:54:52,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 21:54:52,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 21:54:52,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:54:52" (1/1) ...
[2020-07-20 21:54:52,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d37557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:54:52, skipping insertion in model container
[2020-07-20 21:54:52,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:54:52" (1/1) ...
[2020-07-20 21:54:52,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-20 21:54:52,963 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-20 21:54:53,441 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 21:54:53,451 INFO L203 MainTranslator]: Completed pre-run
[2020-07-20 21:54:53,549 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 21:54:53,613 INFO L208 MainTranslator]: Completed translation
[2020-07-20 21:54:53,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:54:53 WrapperNode
[2020-07-20 21:54:53,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 21:54:53,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 21:54:53,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 21:54:53,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 21:54:53,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:54:53" (1/1) ...
[2020-07-20 21:54:53,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:54:53" (1/1) ...
[2020-07-20 21:54:53,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:54:53" (1/1) ...
[2020-07-20 21:54:53,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:54:53" (1/1) ...
[2020-07-20 21:54:53,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:54:53" (1/1) ...
[2020-07-20 21:54:53,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:54:53" (1/1) ...
[2020-07-20 21:54:53,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:54:53" (1/1) ...
[2020-07-20 21:54:53,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 21:54:53,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 21:54:53,704 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 21:54:53,704 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-20 21:54:53,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:54:53" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 21:54:53,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 21:54:53,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 21:54:53,780 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 21:54:53,780 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2020-07-20 21:54:53,780 INFO L130 BoogieDeclarations]: Found specification of procedure atof
[2020-07-20 21:54:53,781 INFO L130 BoogieDeclarations]: Found specification of procedure atoi
[2020-07-20 21:54:53,781 INFO L130 BoogieDeclarations]: Found specification of procedure atol
[2020-07-20 21:54:53,781 INFO L130 BoogieDeclarations]: Found specification of procedure atoll
[2020-07-20 21:54:53,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtod
[2020-07-20 21:54:53,781 INFO L130 BoogieDeclarations]: Found specification of procedure strtof
[2020-07-20 21:54:53,782 INFO L130 BoogieDeclarations]: Found specification of procedure strtold
[2020-07-20 21:54:53,782 INFO L130 BoogieDeclarations]: Found specification of procedure strtol
[2020-07-20 21:54:53,782 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul
[2020-07-20 21:54:53,782 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq
[2020-07-20 21:54:53,782 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq
[2020-07-20 21:54:53,783 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll
[2020-07-20 21:54:53,783 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull
[2020-07-20 21:54:53,783 INFO L130 BoogieDeclarations]: Found specification of procedure l64a
[2020-07-20 21:54:53,783 INFO L130 BoogieDeclarations]: Found specification of procedure a64l
[2020-07-20 21:54:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure select
[2020-07-20 21:54:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure pselect
[2020-07-20 21:54:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2020-07-20 21:54:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2020-07-20 21:54:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2020-07-20 21:54:53,784 INFO L130 BoogieDeclarations]: Found specification of procedure random
[2020-07-20 21:54:53,785 INFO L130 BoogieDeclarations]: Found specification of procedure srandom
[2020-07-20 21:54:53,785 INFO L130 BoogieDeclarations]: Found specification of procedure initstate
[2020-07-20 21:54:53,785 INFO L130 BoogieDeclarations]: Found specification of procedure setstate
[2020-07-20 21:54:53,785 INFO L130 BoogieDeclarations]: Found specification of procedure random_r
[2020-07-20 21:54:53,785 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r
[2020-07-20 21:54:53,785 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r
[2020-07-20 21:54:53,786 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r
[2020-07-20 21:54:53,786 INFO L130 BoogieDeclarations]: Found specification of procedure rand
[2020-07-20 21:54:53,786 INFO L130 BoogieDeclarations]: Found specification of procedure srand
[2020-07-20 21:54:53,786 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r
[2020-07-20 21:54:53,786 INFO L130 BoogieDeclarations]: Found specification of procedure drand48
[2020-07-20 21:54:53,787 INFO L130 BoogieDeclarations]: Found specification of procedure erand48
[2020-07-20 21:54:53,787 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48
[2020-07-20 21:54:53,787 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48
[2020-07-20 21:54:53,787 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48
[2020-07-20 21:54:53,787 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48
[2020-07-20 21:54:53,787 INFO L130 BoogieDeclarations]: Found specification of procedure srand48
[2020-07-20 21:54:53,787 INFO L130 BoogieDeclarations]: Found specification of procedure seed48
[2020-07-20 21:54:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48
[2020-07-20 21:54:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r
[2020-07-20 21:54:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r
[2020-07-20 21:54:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r
[2020-07-20 21:54:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r
[2020-07-20 21:54:53,788 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r
[2020-07-20 21:54:53,789 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r
[2020-07-20 21:54:53,789 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r
[2020-07-20 21:54:53,789 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r
[2020-07-20 21:54:53,789 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r
[2020-07-20 21:54:53,789 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-07-20 21:54:53,789 INFO L130 BoogieDeclarations]: Found specification of procedure calloc
[2020-07-20 21:54:53,790 INFO L130 BoogieDeclarations]: Found specification of procedure realloc
[2020-07-20 21:54:53,790 INFO L130 BoogieDeclarations]: Found specification of procedure free
[2020-07-20 21:54:53,790 INFO L130 BoogieDeclarations]: Found specification of procedure cfree
[2020-07-20 21:54:53,790 INFO L130 BoogieDeclarations]: Found specification of procedure alloca
[2020-07-20 21:54:53,790 INFO L130 BoogieDeclarations]: Found specification of procedure valloc
[2020-07-20 21:54:53,790 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign
[2020-07-20 21:54:53,790 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc
[2020-07-20 21:54:53,791 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-07-20 21:54:53,791 INFO L130 BoogieDeclarations]: Found specification of procedure atexit
[2020-07-20 21:54:53,791 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit
[2020-07-20 21:54:53,791 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit
[2020-07-20 21:54:53,791 INFO L130 BoogieDeclarations]: Found specification of procedure exit
[2020-07-20 21:54:53,791 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit
[2020-07-20 21:54:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit
[2020-07-20 21:54:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure getenv
[2020-07-20 21:54:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure putenv
[2020-07-20 21:54:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure setenv
[2020-07-20 21:54:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv
[2020-07-20 21:54:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv
[2020-07-20 21:54:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp
[2020-07-20 21:54:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp
[2020-07-20 21:54:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps
[2020-07-20 21:54:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp
[2020-07-20 21:54:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure system
[2020-07-20 21:54:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure realpath
[2020-07-20 21:54:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch
[2020-07-20 21:54:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure qsort
[2020-07-20 21:54:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure abs
[2020-07-20 21:54:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure labs
[2020-07-20 21:54:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure llabs
[2020-07-20 21:54:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure div
[2020-07-20 21:54:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv
[2020-07-20 21:54:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv
[2020-07-20 21:54:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt
[2020-07-20 21:54:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt
[2020-07-20 21:54:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt
[2020-07-20 21:54:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt
[2020-07-20 21:54:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt
[2020-07-20 21:54:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt
[2020-07-20 21:54:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r
[2020-07-20 21:54:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r
[2020-07-20 21:54:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r
[2020-07-20 21:54:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r
[2020-07-20 21:54:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure mblen
[2020-07-20 21:54:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc
[2020-07-20 21:54:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb
[2020-07-20 21:54:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs
[2020-07-20 21:54:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs
[2020-07-20 21:54:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch
[2020-07-20 21:54:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt
[2020-07-20 21:54:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg
[2020-07-20 21:54:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-20 21:54:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 21:54:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-20 21:54:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-07-20 21:54:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-07-20 21:54:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-07-20 21:54:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-20 21:54:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 21:54:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 21:54:54,564 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 21:54:54,565 INFO L295 CfgBuilder]: Removed 30 assume(true) statements.
[2020-07-20 21:54:54,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:54:54 BoogieIcfgContainer
[2020-07-20 21:54:54,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 21:54:54,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 21:54:54,574 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 21:54:54,578 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-20 21:54:54,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:54:52" (1/3) ...
[2020-07-20 21:54:54,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8197bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:54:54, skipping insertion in model container
[2020-07-20 21:54:54,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:54:53" (2/3) ...
[2020-07-20 21:54:54,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8197bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:54:54, skipping insertion in model container
[2020-07-20 21:54:54,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:54:54" (3/3) ...
[2020-07-20 21:54:54,583 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i
[2020-07-20 21:54:54,596 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 21:54:54,607 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations.
[2020-07-20 21:54:54,626 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations.
[2020-07-20 21:54:54,660 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-20 21:54:54,660 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-20 21:54:54,661 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 21:54:54,661 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 21:54:54,661 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 21:54:54,661 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-20 21:54:54,661 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 21:54:54,662 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 21:54:54,691 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states.
[2020-07-20 21:54:54,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2020-07-20 21:54:54,700 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 21:54:54,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 21:54:54,702 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]===
[2020-07-20 21:54:54,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:54:54,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1861454184, now seen corresponding path program 1 times
[2020-07-20 21:54:54,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:54:54,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557168646]
[2020-07-20 21:54:54,725 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:54,941 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-20 21:54:54,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:54:54,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core
[2020-07-20 21:54:54,950 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:54:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 21:54:55,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:54:55,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557168646]
[2020-07-20 21:54:55,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:54:55,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-20 21:54:55,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065312542]
[2020-07-20 21:54:55,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-20 21:54:55,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:54:55,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-20 21:54:55,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 21:54:55,036 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 3 states.
[2020-07-20 21:54:55,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:54:55,152 INFO L93 Difference]: Finished difference Result 186 states and 302 transitions.
[2020-07-20 21:54:55,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-07-20 21:54:55,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8
[2020-07-20 21:54:55,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:54:55,173 INFO L225 Difference]: With dead ends: 186
[2020-07-20 21:54:55,173 INFO L226 Difference]: Without dead ends: 99
[2020-07-20 21:54:55,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 21:54:55,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2020-07-20 21:54:55,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81.
[2020-07-20 21:54:55,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states.
[2020-07-20 21:54:55,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions.
[2020-07-20 21:54:55,224 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 8
[2020-07-20 21:54:55,224 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:54:55,225 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions.
[2020-07-20 21:54:55,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-20 21:54:55,225 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions.
[2020-07-20 21:54:55,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-07-20 21:54:55,226 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 21:54:55,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 21:54:55,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:55,442 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]===
[2020-07-20 21:54:55,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:54:55,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1461031906, now seen corresponding path program 1 times
[2020-07-20 21:54:55,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:54:55,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386698103]
[2020-07-20 21:54:55,445 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:55,568 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 21:54:55,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:54:55,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-20 21:54:55,572 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:54:55,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 21:54:55,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:54:55,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386698103]
[2020-07-20 21:54:55,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:54:55,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-20 21:54:55,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128327941]
[2020-07-20 21:54:55,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-20 21:54:55,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:54:55,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-20 21:54:55,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 21:54:55,585 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 3 states.
[2020-07-20 21:54:55,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:54:55,605 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions.
[2020-07-20 21:54:55,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-07-20 21:54:55,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14
[2020-07-20 21:54:55,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:54:55,610 INFO L225 Difference]: With dead ends: 84
[2020-07-20 21:54:55,610 INFO L226 Difference]: Without dead ends: 82
[2020-07-20 21:54:55,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 21:54:55,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2020-07-20 21:54:55,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82.
[2020-07-20 21:54:55,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states.
[2020-07-20 21:54:55,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions.
[2020-07-20 21:54:55,625 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 14
[2020-07-20 21:54:55,626 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:54:55,626 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions.
[2020-07-20 21:54:55,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-20 21:54:55,626 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions.
[2020-07-20 21:54:55,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-07-20 21:54:55,627 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 21:54:55,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 21:54:55,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:55,842 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]===
[2020-07-20 21:54:55,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:54:55,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1461033828, now seen corresponding path program 1 times
[2020-07-20 21:54:55,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:54:55,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309263185]
[2020-07-20 21:54:55,844 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:55,955 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-20 21:54:55,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:54:55,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-07-20 21:54:55,959 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:54:56,029 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2020-07-20 21:54:56,032 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:56,054 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:54:56,061 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2020-07-20 21:54:56,062 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:56,071 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:54:56,072 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:56,073 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19
[2020-07-20 21:54:56,111 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-07-20 21:54:56,113 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-07-20 21:54:56,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 21:54:56,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:54:56,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309263185]
[2020-07-20 21:54:56,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:54:56,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-20 21:54:56,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750572862]
[2020-07-20 21:54:56,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-20 21:54:56,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:54:56,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-20 21:54:56,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-20 21:54:56,156 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 4 states.
[2020-07-20 21:54:56,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:54:56,380 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions.
[2020-07-20 21:54:56,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-07-20 21:54:56,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14
[2020-07-20 21:54:56,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:54:56,384 INFO L225 Difference]: With dead ends: 138
[2020-07-20 21:54:56,387 INFO L226 Difference]: Without dead ends: 136
[2020-07-20 21:54:56,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-07-20 21:54:56,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states.
[2020-07-20 21:54:56,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 84.
[2020-07-20 21:54:56,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states.
[2020-07-20 21:54:56,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions.
[2020-07-20 21:54:56,424 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 14
[2020-07-20 21:54:56,424 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:54:56,425 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions.
[2020-07-20 21:54:56,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-20 21:54:56,425 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions.
[2020-07-20 21:54:56,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-07-20 21:54:56,426 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 21:54:56,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 21:54:56,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:56,632 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]===
[2020-07-20 21:54:56,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:54:56,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1462880870, now seen corresponding path program 1 times
[2020-07-20 21:54:56,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:54:56,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974613769]
[2020-07-20 21:54:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:56,777 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-20 21:54:56,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:54:56,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 13 conjunts are in the unsatisfiable core
[2020-07-20 21:54:56,781 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:54:56,791 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2020-07-20 21:54:56,792 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:56,797 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:54:56,798 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:56,798 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5
[2020-07-20 21:54:56,838 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:54:56,839 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15
[2020-07-20 21:54:56,840 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:56,860 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:54:56,864 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_36|], 8=[|v_#memory_$Pointer$.base_36|]}
[2020-07-20 21:54:56,869 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:54:56,871 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:56,883 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:54:56,886 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:54:56,891 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 24
[2020-07-20 21:54:56,892 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:56,906 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:54:56,907 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:56,908 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:186, output treesize:47
[2020-07-20 21:54:56,928 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts
[2020-07-20 21:54:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 21:54:56,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:54:56,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974613769]
[2020-07-20 21:54:56,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:54:56,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-20 21:54:56,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729863393]
[2020-07-20 21:54:56,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-20 21:54:56,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:54:56,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-20 21:54:56,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-20 21:54:56,942 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 5 states.
[2020-07-20 21:54:57,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:54:57,172 INFO L93 Difference]: Finished difference Result 221 states and 244 transitions.
[2020-07-20 21:54:57,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2020-07-20 21:54:57,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14
[2020-07-20 21:54:57,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:54:57,177 INFO L225 Difference]: With dead ends: 221
[2020-07-20 21:54:57,177 INFO L226 Difference]: Without dead ends: 152
[2020-07-20 21:54:57,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2020-07-20 21:54:57,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states.
[2020-07-20 21:54:57,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 81.
[2020-07-20 21:54:57,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states.
[2020-07-20 21:54:57,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions.
[2020-07-20 21:54:57,189 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 14
[2020-07-20 21:54:57,190 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:54:57,190 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions.
[2020-07-20 21:54:57,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-20 21:54:57,190 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions.
[2020-07-20 21:54:57,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-07-20 21:54:57,191 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 21:54:57,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 21:54:57,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:57,396 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]===
[2020-07-20 21:54:57,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:54:57,398 INFO L82 PathProgramCache]: Analyzing trace with hash 177734485, now seen corresponding path program 1 times
[2020-07-20 21:54:57,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:54:57,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011576849]
[2020-07-20 21:54:57,399 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:57,538 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-20 21:54:57,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:54:57,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-07-20 21:54:57,542 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:54:57,554 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2020-07-20 21:54:57,555 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:57,560 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:54:57,561 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:57,561 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5
[2020-07-20 21:54:57,628 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:54:57,629 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15
[2020-07-20 21:54:57,635 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-07-20 21:54:57,638 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:57,651 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:54:57,656 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:54:57,657 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:57,665 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:54:57,666 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:57,667 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:48, output treesize:4
[2020-07-20 21:54:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 21:54:57,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:54:57,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011576849]
[2020-07-20 21:54:57,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:54:57,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-20 21:54:57,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924768905]
[2020-07-20 21:54:57,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-20 21:54:57,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:54:57,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-20 21:54:57,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-20 21:54:57,677 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 5 states.
[2020-07-20 21:54:57,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:54:57,814 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions.
[2020-07-20 21:54:57,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-07-20 21:54:57,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19
[2020-07-20 21:54:57,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:54:57,816 INFO L225 Difference]: With dead ends: 126
[2020-07-20 21:54:57,816 INFO L226 Difference]: Without dead ends: 122
[2020-07-20 21:54:57,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2020-07-20 21:54:57,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states.
[2020-07-20 21:54:57,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 77.
[2020-07-20 21:54:57,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states.
[2020-07-20 21:54:57,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions.
[2020-07-20 21:54:57,825 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 19
[2020-07-20 21:54:57,825 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:54:57,825 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions.
[2020-07-20 21:54:57,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-20 21:54:57,825 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions.
[2020-07-20 21:54:57,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-07-20 21:54:57,826 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 21:54:57,826 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]
[2020-07-20 21:54:58,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:58,038 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]===
[2020-07-20 21:54:58,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:54:58,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1214805939, now seen corresponding path program 1 times
[2020-07-20 21:54:58,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:54:58,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703504994]
[2020-07-20 21:54:58,041 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:58,131 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-20 21:54:58,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:54:58,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-07-20 21:54:58,153 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:54:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 21:54:58,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:54:58,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703504994]
[2020-07-20 21:54:58,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:54:58,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-20 21:54:58,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127366633]
[2020-07-20 21:54:58,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-20 21:54:58,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:54:58,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-20 21:54:58,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-20 21:54:58,178 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 4 states.
[2020-07-20 21:54:58,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:54:58,268 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions.
[2020-07-20 21:54:58,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-07-20 21:54:58,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20
[2020-07-20 21:54:58,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:54:58,269 INFO L225 Difference]: With dead ends: 136
[2020-07-20 21:54:58,269 INFO L226 Difference]: Without dead ends: 116
[2020-07-20 21:54:58,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-07-20 21:54:58,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2020-07-20 21:54:58,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 76.
[2020-07-20 21:54:58,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states.
[2020-07-20 21:54:58,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions.
[2020-07-20 21:54:58,285 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 20
[2020-07-20 21:54:58,289 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:54:58,289 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions.
[2020-07-20 21:54:58,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-20 21:54:58,289 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions.
[2020-07-20 21:54:58,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-07-20 21:54:58,290 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 21:54:58,291 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]
[2020-07-20 21:54:58,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:58,493 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]===
[2020-07-20 21:54:58,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:54:58,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1924122782, now seen corresponding path program 1 times
[2020-07-20 21:54:58,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:54:58,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379840834]
[2020-07-20 21:54:58,495 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:58,590 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 21:54:58,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:54:58,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-20 21:54:58,594 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:54:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 21:54:58,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:54:58,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379840834]
[2020-07-20 21:54:58,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:54:58,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-20 21:54:58,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130105317]
[2020-07-20 21:54:58,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-20 21:54:58,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:54:58,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-20 21:54:58,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 21:54:58,614 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 3 states.
[2020-07-20 21:54:58,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:54:58,627 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions.
[2020-07-20 21:54:58,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-07-20 21:54:58,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24
[2020-07-20 21:54:58,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:54:58,630 INFO L225 Difference]: With dead ends: 102
[2020-07-20 21:54:58,630 INFO L226 Difference]: Without dead ends: 100
[2020-07-20 21:54:58,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 21:54:58,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2020-07-20 21:54:58,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 78.
[2020-07-20 21:54:58,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states.
[2020-07-20 21:54:58,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions.
[2020-07-20 21:54:58,645 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 24
[2020-07-20 21:54:58,645 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:54:58,645 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions.
[2020-07-20 21:54:58,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-20 21:54:58,645 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions.
[2020-07-20 21:54:58,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-07-20 21:54:58,646 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 21:54:58,646 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]
[2020-07-20 21:54:58,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:58,850 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]===
[2020-07-20 21:54:58,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:54:58,850 INFO L82 PathProgramCache]: Analyzing trace with hash -481740404, now seen corresponding path program 1 times
[2020-07-20 21:54:58,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:54:58,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476303818]
[2020-07-20 21:54:58,851 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:58,935 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-20 21:54:58,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:54:58,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core
[2020-07-20 21:54:58,938 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:54:58,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 21:54:58,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:54:58,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476303818]
[2020-07-20 21:54:58,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:54:58,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-20 21:54:58,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279641501]
[2020-07-20 21:54:58,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-20 21:54:58,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:54:58,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-20 21:54:58,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 21:54:58,958 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand 3 states.
[2020-07-20 21:54:58,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:54:58,971 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions.
[2020-07-20 21:54:58,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-07-20 21:54:58,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25
[2020-07-20 21:54:58,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:54:58,973 INFO L225 Difference]: With dead ends: 78
[2020-07-20 21:54:58,973 INFO L226 Difference]: Without dead ends: 76
[2020-07-20 21:54:58,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 21:54:58,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states.
[2020-07-20 21:54:58,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76.
[2020-07-20 21:54:58,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states.
[2020-07-20 21:54:58,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions.
[2020-07-20 21:54:58,978 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 25
[2020-07-20 21:54:58,978 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:54:58,979 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions.
[2020-07-20 21:54:58,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-20 21:54:58,979 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions.
[2020-07-20 21:54:58,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-07-20 21:54:58,980 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 21:54:58,980 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]
[2020-07-20 21:54:59,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:59,194 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]===
[2020-07-20 21:54:59,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:54:59,195 INFO L82 PathProgramCache]: Analyzing trace with hash -611625627, now seen corresponding path program 1 times
[2020-07-20 21:54:59,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:54:59,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992660234]
[2020-07-20 21:54:59,196 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:59,332 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 21:54:59,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:54:59,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-07-20 21:54:59,335 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:54:59,349 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2020-07-20 21:54:59,349 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:59,354 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:54:59,359 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2020-07-20 21:54:59,359 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:59,363 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:54:59,363 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:59,364 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19
[2020-07-20 21:54:59,373 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-07-20 21:54:59,373 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-07-20 21:54:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 21:54:59,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:54:59,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992660234]
[2020-07-20 21:54:59,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:54:59,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-20 21:54:59,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41189385]
[2020-07-20 21:54:59,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-20 21:54:59,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:54:59,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-20 21:54:59,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-20 21:54:59,389 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 4 states.
[2020-07-20 21:54:59,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:54:59,527 INFO L93 Difference]: Finished difference Result 86 states and 99 transitions.
[2020-07-20 21:54:59,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-07-20 21:54:59,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27
[2020-07-20 21:54:59,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:54:59,530 INFO L225 Difference]: With dead ends: 86
[2020-07-20 21:54:59,530 INFO L226 Difference]: Without dead ends: 84
[2020-07-20 21:54:59,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-07-20 21:54:59,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states.
[2020-07-20 21:54:59,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79.
[2020-07-20 21:54:59,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states.
[2020-07-20 21:54:59,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions.
[2020-07-20 21:54:59,536 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 27
[2020-07-20 21:54:59,536 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:54:59,537 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions.
[2020-07-20 21:54:59,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-20 21:54:59,537 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions.
[2020-07-20 21:54:59,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-07-20 21:54:59,538 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 21:54:59,538 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]
[2020-07-20 21:54:59,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:59,740 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]===
[2020-07-20 21:54:59,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:54:59,740 INFO L82 PathProgramCache]: Analyzing trace with hash -609778585, now seen corresponding path program 1 times
[2020-07-20 21:54:59,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:54:59,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861439511]
[2020-07-20 21:54:59,742 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:54:59,842 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-20 21:54:59,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:54:59,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core
[2020-07-20 21:54:59,846 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:54:59,861 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2020-07-20 21:54:59,861 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:59,868 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:54:59,872 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts.
[2020-07-20 21:54:59,889 INFO L624 ElimStorePlain]: treesize reduction 21, result has 30.0 percent of original size
[2020-07-20 21:54:59,890 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:59,891 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:38, output treesize:5
[2020-07-20 21:54:59,917 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:54:59,918 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15
[2020-07-20 21:54:59,919 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:59,937 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:54:59,939 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_38|], 8=[|v_#memory_$Pointer$.base_40|]}
[2020-07-20 21:54:59,942 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:54:59,943 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:59,957 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:54:59,960 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:54:59,972 INFO L350 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size
[2020-07-20 21:54:59,973 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 26
[2020-07-20 21:54:59,974 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2020-07-20 21:54:59,984 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:54:59,987 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.
[2020-07-20 21:54:59,987 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:186, output treesize:49
[2020-07-20 21:55:00,021 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts
[2020-07-20 21:55:00,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 21:55:00,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:55:00,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861439511]
[2020-07-20 21:55:00,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:55:00,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-20 21:55:00,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835111263]
[2020-07-20 21:55:00,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-20 21:55:00,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:55:00,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-20 21:55:00,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-20 21:55:00,034 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand 5 states.
[2020-07-20 21:55:00,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:55:00,346 INFO L93 Difference]: Finished difference Result 147 states and 169 transitions.
[2020-07-20 21:55:00,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-07-20 21:55:00,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27
[2020-07-20 21:55:00,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:55:00,347 INFO L225 Difference]: With dead ends: 147
[2020-07-20 21:55:00,347 INFO L226 Difference]: Without dead ends: 85
[2020-07-20 21:55:00,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2020-07-20 21:55:00,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2020-07-20 21:55:00,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76.
[2020-07-20 21:55:00,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states.
[2020-07-20 21:55:00,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions.
[2020-07-20 21:55:00,357 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 27
[2020-07-20 21:55:00,357 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:55:00,357 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions.
[2020-07-20 21:55:00,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-20 21:55:00,357 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions.
[2020-07-20 21:55:00,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-07-20 21:55:00,358 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 21:55:00,358 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]
[2020-07-20 21:55:00,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:55:00,562 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]===
[2020-07-20 21:55:00,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:55:00,563 INFO L82 PathProgramCache]: Analyzing trace with hash -2038545261, now seen corresponding path program 1 times
[2020-07-20 21:55:00,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:55:00,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326741672]
[2020-07-20 21:55:00,564 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:55:00,665 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 21:55:00,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:55:00,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-07-20 21:55:00,669 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:55:00,684 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2020-07-20 21:55:00,684 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:00,691 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:00,695 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2020-07-20 21:55:00,696 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:00,706 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:00,706 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:00,707 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19
[2020-07-20 21:55:00,749 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7
[2020-07-20 21:55:00,750 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:00,758 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:00,762 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7
[2020-07-20 21:55:00,762 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:00,770 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:00,770 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:00,770 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:7
[2020-07-20 21:55:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 21:55:00,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:55:00,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326741672]
[2020-07-20 21:55:00,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:55:00,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-20 21:55:00,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081102408]
[2020-07-20 21:55:00,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-20 21:55:00,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:55:00,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-20 21:55:00,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-20 21:55:00,790 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 5 states.
[2020-07-20 21:55:01,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:55:01,024 INFO L93 Difference]: Finished difference Result 176 states and 199 transitions.
[2020-07-20 21:55:01,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-07-20 21:55:01,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28
[2020-07-20 21:55:01,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:55:01,027 INFO L225 Difference]: With dead ends: 176
[2020-07-20 21:55:01,027 INFO L226 Difference]: Without dead ends: 135
[2020-07-20 21:55:01,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2020-07-20 21:55:01,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2020-07-20 21:55:01,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 86.
[2020-07-20 21:55:01,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states.
[2020-07-20 21:55:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions.
[2020-07-20 21:55:01,036 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 28
[2020-07-20 21:55:01,036 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:55:01,036 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions.
[2020-07-20 21:55:01,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-20 21:55:01,037 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions.
[2020-07-20 21:55:01,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-07-20 21:55:01,038 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 21:55:01,038 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]
[2020-07-20 21:55:01,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:55:01,247 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]===
[2020-07-20 21:55:01,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:55:01,248 INFO L82 PathProgramCache]: Analyzing trace with hash 567478293, now seen corresponding path program 1 times
[2020-07-20 21:55:01,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:55:01,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100068208]
[2020-07-20 21:55:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:55:01,384 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 21:55:01,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:55:01,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjunts are in the unsatisfiable core
[2020-07-20 21:55:01,389 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:55:01,406 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2020-07-20 21:55:01,406 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:01,411 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:01,412 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:01,413 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9
[2020-07-20 21:55:01,469 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:01,470 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15
[2020-07-20 21:55:01,472 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:01,530 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:01,534 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:55:01,538 INFO L173 IndexEqualityManager]: detected equality via solver
[2020-07-20 21:55:01,540 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:55:01,560 INFO L350 Elim1Store]: treesize reduction 87, result has 9.4 percent of original size
[2020-07-20 21:55:01,561 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 271 treesize of output 193
[2020-07-20 21:55:01,561 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:01,584 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:01,589 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:55:01,595 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 31
[2020-07-20 21:55:01,596 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:01,615 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:01,617 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:01,617 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:356, output treesize:75
[2020-07-20 21:55:01,718 INFO L173 IndexEqualityManager]: detected equality via solver
[2020-07-20 21:55:01,719 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:55:01,733 INFO L350 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size
[2020-07-20 21:55:01,734 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 55
[2020-07-20 21:55:01,736 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts
[2020-07-20 21:55:01,738 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts
[2020-07-20 21:55:01,739 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.
[2020-07-20 21:55:01,779 INFO L624 ElimStorePlain]: treesize reduction 8, result has 84.0 percent of original size
[2020-07-20 21:55:01,794 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:01,795 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 34
[2020-07-20 21:55:01,796 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:01,803 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:01,804 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:01,804 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:94, output treesize:7
[2020-07-20 21:55:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 21:55:01,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:55:01,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100068208]
[2020-07-20 21:55:01,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:55:01,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-07-20 21:55:01,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808633121]
[2020-07-20 21:55:01,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-07-20 21:55:01,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:55:01,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-07-20 21:55:01,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-07-20 21:55:01,829 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand 7 states.
[2020-07-20 21:55:02,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:55:02,649 INFO L93 Difference]: Finished difference Result 228 states and 253 transitions.
[2020-07-20 21:55:02,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2020-07-20 21:55:02,651 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28
[2020-07-20 21:55:02,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:55:02,653 INFO L225 Difference]: With dead ends: 228
[2020-07-20 21:55:02,653 INFO L226 Difference]: Without dead ends: 226
[2020-07-20 21:55:02,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156
[2020-07-20 21:55:02,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states.
[2020-07-20 21:55:02,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 98.
[2020-07-20 21:55:02,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states.
[2020-07-20 21:55:02,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions.
[2020-07-20 21:55:02,663 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 28
[2020-07-20 21:55:02,663 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:55:02,663 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions.
[2020-07-20 21:55:02,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-07-20 21:55:02,663 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions.
[2020-07-20 21:55:02,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2020-07-20 21:55:02,664 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 21:55:02,665 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]
[2020-07-20 21:55:02,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:55:02,878 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]===
[2020-07-20 21:55:02,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:55:02,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1176203735, now seen corresponding path program 1 times
[2020-07-20 21:55:02,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:55:02,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991645092]
[2020-07-20 21:55:02,880 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:55:02,990 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-20 21:55:02,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:55:02,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-07-20 21:55:02,993 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:55:03,001 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2020-07-20 21:55:03,002 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:03,012 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:03,016 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2020-07-20 21:55:03,017 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:03,022 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:03,023 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:03,023 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19
[2020-07-20 21:55:03,042 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7
[2020-07-20 21:55:03,043 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:03,051 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:03,054 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7
[2020-07-20 21:55:03,055 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:03,065 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:03,066 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:03,066 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:7
[2020-07-20 21:55:03,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-07-20 21:55:03,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:55:03,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991645092]
[2020-07-20 21:55:03,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:55:03,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-20 21:55:03,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557464022]
[2020-07-20 21:55:03,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-20 21:55:03,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:55:03,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-20 21:55:03,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-20 21:55:03,081 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 4 states.
[2020-07-20 21:55:03,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:55:03,216 INFO L93 Difference]: Finished difference Result 143 states and 163 transitions.
[2020-07-20 21:55:03,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-07-20 21:55:03,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30
[2020-07-20 21:55:03,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:55:03,218 INFO L225 Difference]: With dead ends: 143
[2020-07-20 21:55:03,218 INFO L226 Difference]: Without dead ends: 125
[2020-07-20 21:55:03,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-07-20 21:55:03,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states.
[2020-07-20 21:55:03,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117.
[2020-07-20 21:55:03,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states.
[2020-07-20 21:55:03,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 138 transitions.
[2020-07-20 21:55:03,231 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 138 transitions. Word has length 30
[2020-07-20 21:55:03,231 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:55:03,231 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 138 transitions.
[2020-07-20 21:55:03,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-20 21:55:03,231 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 138 transitions.
[2020-07-20 21:55:03,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2020-07-20 21:55:03,233 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 21:55:03,233 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]
[2020-07-20 21:55:03,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:55:03,448 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]===
[2020-07-20 21:55:03,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:55:03,449 INFO L82 PathProgramCache]: Analyzing trace with hash -753501909, now seen corresponding path program 1 times
[2020-07-20 21:55:03,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:55:03,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858414178]
[2020-07-20 21:55:03,450 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:55:03,552 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-20 21:55:03,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 21:55:03,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-07-20 21:55:03,557 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 21:55:03,569 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5
[2020-07-20 21:55:03,570 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:03,573 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:03,574 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:03,574 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9
[2020-07-20 21:55:03,600 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:03,600 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15
[2020-07-20 21:55:03,601 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:03,626 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:03,628 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_42|], 8=[|v_#memory_$Pointer$.base_44|]}
[2020-07-20 21:55:03,630 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:55:03,631 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:03,643 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:03,646 INFO L190 IndexEqualityManager]: detected not equals via solver
[2020-07-20 21:55:03,650 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 24
[2020-07-20 21:55:03,651 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:03,675 INFO L624 ElimStorePlain]: treesize reduction 4, result has 88.6 percent of original size
[2020-07-20 21:55:03,676 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:03,677 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:189, output treesize:40
[2020-07-20 21:55:03,717 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 21:55:03,717 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 25
[2020-07-20 21:55:03,719 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:03,733 INFO L624 ElimStorePlain]: treesize reduction 4, result has 69.2 percent of original size
[2020-07-20 21:55:03,734 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 21:55:03,734 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:4
[2020-07-20 21:55:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 21:55:03,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 21:55:03,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858414178]
[2020-07-20 21:55:03,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 21:55:03,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-07-20 21:55:03,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335952540]
[2020-07-20 21:55:03,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-07-20 21:55:03,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 21:55:03,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-07-20 21:55:03,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-07-20 21:55:03,752 INFO L87 Difference]: Start difference. First operand 117 states and 138 transitions. Second operand 6 states.
[2020-07-20 21:55:04,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 21:55:04,173 INFO L93 Difference]: Finished difference Result 251 states and 286 transitions.
[2020-07-20 21:55:04,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2020-07-20 21:55:04,174 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30
[2020-07-20 21:55:04,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 21:55:04,176 INFO L225 Difference]: With dead ends: 251
[2020-07-20 21:55:04,176 INFO L226 Difference]: Without dead ends: 210
[2020-07-20 21:55:04,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2020-07-20 21:55:04,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states.
[2020-07-20 21:55:04,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 117.
[2020-07-20 21:55:04,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states.
[2020-07-20 21:55:04,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions.
[2020-07-20 21:55:04,194 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 30
[2020-07-20 21:55:04,194 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 21:55:04,195 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions.
[2020-07-20 21:55:04,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-07-20 21:55:04,195 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions.
[2020-07-20 21:55:04,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2020-07-20 21:55:04,196 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 21:55:04,196 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]
[2020-07-20 21:55:04,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:55:04,411 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]===
[2020-07-20 21:55:04,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 21:55:04,412 INFO L82 PathProgramCache]: Analyzing trace with hash 758661948, now seen corresponding path program 1 times
[2020-07-20 21:55:04,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 21:55:04,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188914935]
[2020-07-20 21:55:04,412 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:55:04,591 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 21:55:04,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat
[2020-07-20 21:55:04,592 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 21:55:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-20 21:55:04,620 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 21:55:04,650 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-20 21:55:04,651 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-20 21:55:04,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 21:55:04,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:55:04 BoogieIcfgContainer
[2020-07-20 21:55:04,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 21:55:04,915 INFO L168 Benchmark]: Toolchain (without parser) took 12044.13 ms. Allocated memory was 146.8 MB in the beginning and 301.5 MB in the end (delta: 154.7 MB). Free memory was 102.1 MB in the beginning and 98.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 158.2 MB. Max. memory is 7.1 GB.
[2020-07-20 21:55:04,916 INFO L168 Benchmark]: CDTParser took 0.70 ms. Allocated memory is still 146.8 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
[2020-07-20 21:55:04,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 740.34 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.7 MB in the beginning and 170.8 MB in the end (delta: -69.1 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB.
[2020-07-20 21:55:04,917 INFO L168 Benchmark]: Boogie Preprocessor took 88.49 ms. Allocated memory is still 203.4 MB. Free memory was 170.8 MB in the beginning and 167.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB.
[2020-07-20 21:55:04,918 INFO L168 Benchmark]: RCFGBuilder took 868.13 ms. Allocated memory is still 203.4 MB. Free memory was 167.4 MB in the beginning and 111.5 MB in the end (delta: 56.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB.
[2020-07-20 21:55:04,918 INFO L168 Benchmark]: TraceAbstraction took 10340.01 ms. Allocated memory was 203.4 MB in the beginning and 301.5 MB in the end (delta: 98.0 MB). Free memory was 111.5 MB in the beginning and 98.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 110.9 MB. Max. memory is 7.1 GB.
[2020-07-20 21:55:04,920 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.70 ms. Allocated memory is still 146.8 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 740.34 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 101.7 MB in the beginning and 170.8 MB in the end (delta: -69.1 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 88.49 ms. Allocated memory is still 203.4 MB. Free memory was 170.8 MB in the beginning and 167.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 868.13 ms. Allocated memory is still 203.4 MB. Free memory was 167.4 MB in the beginning and 111.5 MB in the end (delta: 56.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 10340.01 ms. Allocated memory was 203.4 MB in the beginning and 301.5 MB in the end (delta: 98.0 MB). Free memory was 111.5 MB in the beginning and 98.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 110.9 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L992] SLL* list = malloc(sizeof(SLL));
[L993] list->next = ((void*)0)
[L994] list->prev = ((void*)0)
VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}]
[L995] COND FALSE !(!(list != ((void*)0)))
VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}]
[L995] COND FALSE !(__VERIFIER_nondet_int())
[L995] list->inner = malloc(sizeof(SLL))
[L995] EXPR list->inner
[L995] list->inner->next = ((void*)0)
[L995] EXPR list->inner
[L995] list->inner->inner = ((void*)0)
[L995] EXPR list->inner
[L995] 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))={-2:0}, malloc(sizeof(SLL))={-1:0}]
[L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L997] SLL* end = list;
VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}]
[L1000] COND FALSE !(__VERIFIER_nondet_int())
[L1011] end = ((void*)0)
[L1012] end = list
VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}]
[L1015] COND FALSE !(!(((void*)0) != end))
VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}]
[L1017] COND TRUE ((void*)0) != end
[L1019] int len = 0;
[L1020] EXPR end->inner
[L1020] SLL* inner = end->inner;
[L1021] COND TRUE ((void*)0) != inner
VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}]
[L1023] COND TRUE len == 0
[L1024] len = 1
VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}]
[L1027] COND FALSE !(!(((void*)0) != inner))
VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}]
[L1028] EXPR inner->inner
VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}]
[L1028] COND FALSE !(!(((void*)0) == inner->inner))
[L1029] EXPR inner->next
VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}]
[L1029] COND TRUE !(((void*)0) != inner->next)
[L1029] __VERIFIER_error()
VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 88 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.2s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1148 SDtfs, 1197 SDslu, 1997 SDs, 0 SdLazy, 900 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 319 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 540 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 339 NumberOfCodeBlocks, 215 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 294 ConstructedInterpolants, 6 QuantifiedInterpolants, 74062 SizeOfPredicates, 74 NumberOfNonLiveVariables, 906 ConjunctsInSsa, 139 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 2/2 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...