/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 02:07:29,945 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 02:07:29,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 02:07:29,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 02:07:29,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 02:07:29,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 02:07:29,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 02:07:29,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 02:07:29,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 02:07:29,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 02:07:29,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 02:07:29,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 02:07:29,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 02:07:29,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 02:07:29,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 02:07:29,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 02:07:29,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 02:07:30,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 02:07:30,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 02:07:30,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 02:07:30,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 02:07:30,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 02:07:30,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 02:07:30,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 02:07:30,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 02:07:30,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 02:07:30,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 02:07:30,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 02:07:30,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 02:07:30,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 02:07:30,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 02:07:30,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 02:07:30,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 02:07:30,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 02:07:30,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 02:07:30,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 02:07:30,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 02:07:30,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 02:07:30,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 02:07:30,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 02:07:30,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 02:07:30,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-25 02:07:30,055 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 02:07:30,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 02:07:30,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 02:07:30,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 02:07:30,057 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 02:07:30,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 02:07:30,058 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 02:07:30,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 02:07:30,058 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 02:07:30,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 02:07:30,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 02:07:30,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 02:07:30,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 02:07:30,059 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 02:07:30,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 02:07:30,060 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 02:07:30,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 02:07:30,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 02:07:30,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 02:07:30,061 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 02:07:30,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 02:07:30,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 02:07:30,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 02:07:30,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 02:07:30,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 02:07:30,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 02:07:30,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 02:07:30,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 02:07:30,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 02:07:30,063 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 -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;
[2020-09-25 02:07:30,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 02:07:30,573 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 02:07:30,577 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 02:07:30,580 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 02:07:30,580 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 02:07:30,582 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i
[2020-09-25 02:07:30,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e107df86/e29ca973623349eaa648fa8cf4ad3210/FLAG4e009ff8a
[2020-09-25 02:07:31,240 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 02:07:31,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i
[2020-09-25 02:07:31,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e107df86/e29ca973623349eaa648fa8cf4ad3210/FLAG4e009ff8a
[2020-09-25 02:07:31,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e107df86/e29ca973623349eaa648fa8cf4ad3210
[2020-09-25 02:07:31,516 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 02:07:31,522 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 02:07:31,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 02:07:31,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 02:07:31,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 02:07:31,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:07:31" (1/1) ...
[2020-09-25 02:07:31,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac0f60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:31, skipping insertion in model container
[2020-09-25 02:07:31,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:07:31" (1/1) ...
[2020-09-25 02:07:31,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 02:07:31,632 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 02:07:32,263 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 02:07:32,278 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 02:07:32,341 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 02:07:32,390 INFO L208 MainTranslator]: Completed translation
[2020-09-25 02:07:32,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:32 WrapperNode
[2020-09-25 02:07:32,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 02:07:32,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 02:07:32,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 02:07:32,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 02:07:32,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:32" (1/1) ...
[2020-09-25 02:07:32,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:32" (1/1) ...
[2020-09-25 02:07:32,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:32" (1/1) ...
[2020-09-25 02:07:32,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:32" (1/1) ...
[2020-09-25 02:07:32,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:32" (1/1) ...
[2020-09-25 02:07:32,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:32" (1/1) ...
[2020-09-25 02:07:32,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:32" (1/1) ...
[2020-09-25 02:07:32,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 02:07:32,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 02:07:32,468 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 02:07:32,468 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 02:07:32,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:32" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 02:07:32,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 02:07:32,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 02:07:32,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 02:07:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2020-09-25 02:07:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure atof
[2020-09-25 02:07:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure atoi
[2020-09-25 02:07:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure atol
[2020-09-25 02:07:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure atoll
[2020-09-25 02:07:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtod
[2020-09-25 02:07:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtof
[2020-09-25 02:07:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtold
[2020-09-25 02:07:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtol
[2020-09-25 02:07:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul
[2020-09-25 02:07:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq
[2020-09-25 02:07:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq
[2020-09-25 02:07:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll
[2020-09-25 02:07:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull
[2020-09-25 02:07:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure l64a
[2020-09-25 02:07:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure a64l
[2020-09-25 02:07:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure select
[2020-09-25 02:07:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure pselect
[2020-09-25 02:07:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2020-09-25 02:07:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2020-09-25 02:07:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2020-09-25 02:07:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure random
[2020-09-25 02:07:32,561 INFO L130 BoogieDeclarations]: Found specification of procedure srandom
[2020-09-25 02:07:32,561 INFO L130 BoogieDeclarations]: Found specification of procedure initstate
[2020-09-25 02:07:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure setstate
[2020-09-25 02:07:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure random_r
[2020-09-25 02:07:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r
[2020-09-25 02:07:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r
[2020-09-25 02:07:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r
[2020-09-25 02:07:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure rand
[2020-09-25 02:07:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure srand
[2020-09-25 02:07:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r
[2020-09-25 02:07:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure drand48
[2020-09-25 02:07:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure erand48
[2020-09-25 02:07:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48
[2020-09-25 02:07:32,564 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48
[2020-09-25 02:07:32,564 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48
[2020-09-25 02:07:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48
[2020-09-25 02:07:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure srand48
[2020-09-25 02:07:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure seed48
[2020-09-25 02:07:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48
[2020-09-25 02:07:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r
[2020-09-25 02:07:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r
[2020-09-25 02:07:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r
[2020-09-25 02:07:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r
[2020-09-25 02:07:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r
[2020-09-25 02:07:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r
[2020-09-25 02:07:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r
[2020-09-25 02:07:32,568 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r
[2020-09-25 02:07:32,568 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r
[2020-09-25 02:07:32,568 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-09-25 02:07:32,568 INFO L130 BoogieDeclarations]: Found specification of procedure calloc
[2020-09-25 02:07:32,568 INFO L130 BoogieDeclarations]: Found specification of procedure realloc
[2020-09-25 02:07:32,568 INFO L130 BoogieDeclarations]: Found specification of procedure free
[2020-09-25 02:07:32,569 INFO L130 BoogieDeclarations]: Found specification of procedure cfree
[2020-09-25 02:07:32,569 INFO L130 BoogieDeclarations]: Found specification of procedure alloca
[2020-09-25 02:07:32,569 INFO L130 BoogieDeclarations]: Found specification of procedure valloc
[2020-09-25 02:07:32,569 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign
[2020-09-25 02:07:32,569 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc
[2020-09-25 02:07:32,569 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-09-25 02:07:32,569 INFO L130 BoogieDeclarations]: Found specification of procedure atexit
[2020-09-25 02:07:32,569 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit
[2020-09-25 02:07:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit
[2020-09-25 02:07:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure exit
[2020-09-25 02:07:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit
[2020-09-25 02:07:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit
[2020-09-25 02:07:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure getenv
[2020-09-25 02:07:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure putenv
[2020-09-25 02:07:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure setenv
[2020-09-25 02:07:32,571 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv
[2020-09-25 02:07:32,571 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv
[2020-09-25 02:07:32,571 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp
[2020-09-25 02:07:32,571 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp
[2020-09-25 02:07:32,571 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps
[2020-09-25 02:07:32,571 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp
[2020-09-25 02:07:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure system
[2020-09-25 02:07:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure realpath
[2020-09-25 02:07:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch
[2020-09-25 02:07:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure qsort
[2020-09-25 02:07:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure abs
[2020-09-25 02:07:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure labs
[2020-09-25 02:07:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure llabs
[2020-09-25 02:07:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure div
[2020-09-25 02:07:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv
[2020-09-25 02:07:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv
[2020-09-25 02:07:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt
[2020-09-25 02:07:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt
[2020-09-25 02:07:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt
[2020-09-25 02:07:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt
[2020-09-25 02:07:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt
[2020-09-25 02:07:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt
[2020-09-25 02:07:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r
[2020-09-25 02:07:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r
[2020-09-25 02:07:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r
[2020-09-25 02:07:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r
[2020-09-25 02:07:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure mblen
[2020-09-25 02:07:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc
[2020-09-25 02:07:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb
[2020-09-25 02:07:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs
[2020-09-25 02:07:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs
[2020-09-25 02:07:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch
[2020-09-25 02:07:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt
[2020-09-25 02:07:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg
[2020-09-25 02:07:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-25 02:07:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 02:07:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 02:07:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-25 02:07:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-25 02:07:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 02:07:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-25 02:07:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 02:07:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 02:07:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 02:07:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 02:07:33,257 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 02:07:33,258 INFO L295 CfgBuilder]: Removed 9 assume(true) statements.
[2020-09-25 02:07:33,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:07:33 BoogieIcfgContainer
[2020-09-25 02:07:33,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 02:07:33,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 02:07:33,265 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 02:07:33,269 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 02:07:33,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:07:31" (1/3) ...
[2020-09-25 02:07:33,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d27e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:07:33, skipping insertion in model container
[2020-09-25 02:07:33,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:32" (2/3) ...
[2020-09-25 02:07:33,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d27e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:07:33, skipping insertion in model container
[2020-09-25 02:07:33,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:07:33" (3/3) ...
[2020-09-25 02:07:33,273 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i
[2020-09-25 02:07:33,286 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 02:07:33,297 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations.
[2020-09-25 02:07:33,318 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2020-09-25 02:07:33,348 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 02:07:33,348 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 02:07:33,348 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 02:07:33,349 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 02:07:33,349 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 02:07:33,349 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 02:07:33,349 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 02:07:33,349 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 02:07:33,376 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states.
[2020-09-25 02:07:33,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-09-25 02:07:33,384 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 02:07:33,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 02:07:33,386 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:07:33,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:07:33,392 INFO L82 PathProgramCache]: Analyzing trace with hash -218973700, now seen corresponding path program 1 times
[2020-09-25 02:07:33,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:07:33,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308654619]
[2020-09-25 02:07:33,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:07:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:07:33,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:07:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:07:33,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:07:33,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-25 02:07:33,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 02:07:33,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421
[2020-09-25 02:07:33,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:07:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:07:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-25 02:07:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:07:33,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-25 02:07:34,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 02:07:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:07:34,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:07:34,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:07:34,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 02:07:34,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:07:34,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-09-25 02:07:34,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:07:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:07:34,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:07:34,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:07:34,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:07:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 02:07:34,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308654619]
[2020-09-25 02:07:34,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 02:07:34,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-25 02:07:34,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883399267]
[2020-09-25 02:07:34,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-25 02:07:34,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 02:07:34,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-25 02:07:34,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-25 02:07:34,125 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 3 states.
[2020-09-25 02:07:34,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 02:07:34,346 INFO L93 Difference]: Finished difference Result 156 states and 187 transitions.
[2020-09-25 02:07:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-25 02:07:34,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18
[2020-09-25 02:07:34,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 02:07:34,361 INFO L225 Difference]: With dead ends: 156
[2020-09-25 02:07:34,362 INFO L226 Difference]: Without dead ends: 76
[2020-09-25 02:07:34,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-25 02:07:34,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states.
[2020-09-25 02:07:34,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76.
[2020-09-25 02:07:34,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states.
[2020-09-25 02:07:34,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions.
[2020-09-25 02:07:34,413 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 18
[2020-09-25 02:07:34,414 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 02:07:34,414 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions.
[2020-09-25 02:07:34,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-25 02:07:34,414 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions.
[2020-09-25 02:07:34,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-09-25 02:07:34,415 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 02:07:34,415 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]
[2020-09-25 02:07:34,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 02:07:34,416 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:07:34,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:07:34,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1356448202, now seen corresponding path program 1 times
[2020-09-25 02:07:34,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:07:34,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155700720]
[2020-09-25 02:07:34,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:07:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:07:34,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:07:34,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:07:34,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-09-25 02:07:34,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:07:34,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140
[2020-09-25 02:07:34,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:07:34,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 02:07:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14
[2020-09-25 02:07:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-09-25 02:07:34,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:07:34,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 02:07:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:07:34,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:07:34,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:07:34,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 02:07:34,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:07:34,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 02:07:34,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:07:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:07:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:07:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:07:34,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:07:34,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 02:07:34,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155700720]
[2020-09-25 02:07:34,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 02:07:34,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-25 02:07:34,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640828038]
[2020-09-25 02:07:34,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 02:07:34,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 02:07:34,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 02:07:34,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 02:07:34,688 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 6 states.
[2020-09-25 02:07:34,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 02:07:34,953 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions.
[2020-09-25 02:07:34,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 02:07:34,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20
[2020-09-25 02:07:34,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 02:07:34,956 INFO L225 Difference]: With dead ends: 104
[2020-09-25 02:07:34,956 INFO L226 Difference]: Without dead ends: 102
[2020-09-25 02:07:34,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2020-09-25 02:07:34,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2020-09-25 02:07:34,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 74.
[2020-09-25 02:07:34,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states.
[2020-09-25 02:07:34,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions.
[2020-09-25 02:07:34,968 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 20
[2020-09-25 02:07:34,968 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 02:07:34,968 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions.
[2020-09-25 02:07:34,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 02:07:34,969 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions.
[2020-09-25 02:07:34,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-09-25 02:07:34,970 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 02:07:34,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 02:07:34,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 02:07:34,970 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:07:34,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:07:34,971 INFO L82 PathProgramCache]: Analyzing trace with hash 539652413, now seen corresponding path program 1 times
[2020-09-25 02:07:34,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:07:34,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033055479]
[2020-09-25 02:07:34,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:07:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:07:35,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:07:35,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:07:35,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31
[2020-09-25 02:07:35,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:07:35,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171
[2020-09-25 02:07:35,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:07:35,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 02:07:35,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-25 02:07:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-25 02:07:35,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:07:35,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 02:07:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:07:35,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:07:35,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:07:35,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 02:07:35,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:07:35,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-25 02:07:35,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:07:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:07:35,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:07:35,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:07:35,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:07:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 02:07:35,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033055479]
[2020-09-25 02:07:35,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 02:07:35,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-25 02:07:35,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131428594]
[2020-09-25 02:07:35,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 02:07:35,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 02:07:35,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 02:07:35,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 02:07:35,245 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 6 states.
[2020-09-25 02:07:35,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 02:07:35,484 INFO L93 Difference]: Finished difference Result 128 states and 134 transitions.
[2020-09-25 02:07:35,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-09-25 02:07:35,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24
[2020-09-25 02:07:35,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 02:07:35,486 INFO L225 Difference]: With dead ends: 128
[2020-09-25 02:07:35,486 INFO L226 Difference]: Without dead ends: 125
[2020-09-25 02:07:35,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2020-09-25 02:07:35,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states.
[2020-09-25 02:07:35,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 83.
[2020-09-25 02:07:35,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states.
[2020-09-25 02:07:35,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions.
[2020-09-25 02:07:35,498 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 24
[2020-09-25 02:07:35,498 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 02:07:35,499 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions.
[2020-09-25 02:07:35,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 02:07:35,499 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions.
[2020-09-25 02:07:35,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2020-09-25 02:07:35,500 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 02:07:35,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 02:07:35,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 02:07:35,501 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:07:35,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:07:35,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1498142901, now seen corresponding path program 1 times
[2020-09-25 02:07:35,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:07:35,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263816068]
[2020-09-25 02:07:35,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:07:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-25 02:07:35,521 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-25 02:07:35,521 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-25 02:07:35,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-25 02:07:35,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:07:35 BoogieIcfgContainer
[2020-09-25 02:07:35,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 02:07:35,550 INFO L168 Benchmark]: Toolchain (without parser) took 4031.47 ms. Allocated memory was 138.9 MB in the beginning and 246.9 MB in the end (delta: 108.0 MB). Free memory was 100.8 MB in the beginning and 192.6 MB in the end (delta: -91.8 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB.
[2020-09-25 02:07:35,551 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-25 02:07:35,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 868.39 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.2 MB in the beginning and 170.1 MB in the end (delta: -69.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB.
[2020-09-25 02:07:35,553 INFO L168 Benchmark]: Boogie Preprocessor took 75.90 ms. Allocated memory is still 203.4 MB. Free memory was 170.1 MB in the beginning and 166.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB.
[2020-09-25 02:07:35,554 INFO L168 Benchmark]: RCFGBuilder took 795.78 ms. Allocated memory is still 203.4 MB. Free memory was 166.6 MB in the beginning and 114.9 MB in the end (delta: 51.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB.
[2020-09-25 02:07:35,554 INFO L168 Benchmark]: TraceAbstraction took 2282.27 ms. Allocated memory was 203.4 MB in the beginning and 246.9 MB in the end (delta: 43.5 MB). Free memory was 114.2 MB in the beginning and 192.6 MB in the end (delta: -78.4 MB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-25 02:07:35,558 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 868.39 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.2 MB in the beginning and 170.1 MB in the end (delta: -69.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 75.90 ms. Allocated memory is still 203.4 MB. Free memory was 170.1 MB in the beginning and 166.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 795.78 ms. Allocated memory is still 203.4 MB. Free memory was 166.6 MB in the beginning and 114.9 MB in the end (delta: 51.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 2282.27 ms. Allocated memory was 203.4 MB in the beginning and 246.9 MB in the end (delta: 43.5 MB). Free memory was 114.2 MB in the beginning and 192.6 MB in the end (delta: -78.4 MB). There was no memory consumed. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 1040]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L994] SLL* list = malloc(sizeof(SLL));
[L995] list->next = ((void*)0)
[L996] list->prev = ((void*)0)
[L997] list->colour = BLACK
[L999] SLL* end = list;
[L1002] COND FALSE !(__VERIFIER_nondet_int())
[L1025] end = ((void*)0)
[L1026] end = list
[L1029] COND FALSE !(!(((void*)0) != end))
[L1030] EXPR end->colour
[L1030] COND FALSE !(!(BLACK == end->colour))
[L1032] COND TRUE ((void*)0) != end
[L1034] EXPR end->colour
[L1034] COND FALSE !(RED == end->colour)
[L1040] EXPR end->next
[L1040] COND TRUE !(end->next)
[L1040] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 99 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 225 SDtfs, 302 SDslu, 217 SDs, 0 SdLazy, 366 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 70 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 5084 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...