/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 BIGGEST_EQUIVALENCE_CLASS --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/bitvector-regression/implicitunsignedconversion-2.c
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This is Ultimate 0.1.25-d623d84
[2020-07-21 22:02:33,928 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-21 22:02:33,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-21 22:02:33,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-21 22:02:33,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-21 22:02:33,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-21 22:02:33,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-21 22:02:33,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-21 22:02:33,969 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-21 22:02:33,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-21 22:02:33,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-21 22:02:33,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-21 22:02:33,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-21 22:02:33,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-21 22:02:33,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-21 22:02:33,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-21 22:02:33,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-21 22:02:33,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-21 22:02:33,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-21 22:02:33,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-21 22:02:33,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-21 22:02:33,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-21 22:02:33,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-21 22:02:34,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-21 22:02:34,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-21 22:02:34,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-21 22:02:34,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-21 22:02:34,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-21 22:02:34,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-21 22:02:34,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-21 22:02:34,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-21 22:02:34,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-21 22:02:34,011 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-21 22:02:34,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-21 22:02:34,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-21 22:02:34,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-21 22:02:34,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-21 22:02:34,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-21 22:02:34,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-21 22:02:34,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-21 22:02:34,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-21 22:02:34,020 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
[2020-07-21 22:02:34,034 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-21 22:02:34,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-21 22:02:34,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-21 22:02:34,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-21 22:02:34,036 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-21 22:02:34,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-21 22:02:34,037 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-21 22:02:34,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-21 22:02:34,037 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-21 22:02:34,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-21 22:02:34,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-21 22:02:34,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-21 22:02:34,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-21 22:02:34,038 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-21 22:02:34,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-21 22:02:34,039 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-21 22:02:34,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-21 22:02:34,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-21 22:02:34,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-21 22:02:34,039 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-21 22:02:34,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-21 22:02:34,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 22:02:34,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-21 22:02:34,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-21 22:02:34,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-21 22:02:34,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-21 22:02:34,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 22:02:34,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-21 22:02:34,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-21 22:02:34,042 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 -> BIGGEST_EQUIVALENCE_CLASS
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
[2020-07-21 22:02:34,311 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-21 22:02:34,324 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-21 22:02:34,327 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-21 22:02:34,328 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-21 22:02:34,329 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-21 22:02:34,329 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/implicitunsignedconversion-2.c
[2020-07-21 22:02:34,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3016e256/889529f7dcb9475985c0541f6bd11c0b/FLAG45f535f26
[2020-07-21 22:02:34,818 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-21 22:02:34,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-regression/implicitunsignedconversion-2.c
[2020-07-21 22:02:34,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3016e256/889529f7dcb9475985c0541f6bd11c0b/FLAG45f535f26
[2020-07-21 22:02:35,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3016e256/889529f7dcb9475985c0541f6bd11c0b
[2020-07-21 22:02:35,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-21 22:02:35,226 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-21 22:02:35,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-21 22:02:35,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-21 22:02:35,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-21 22:02:35,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:35" (1/1) ...
[2020-07-21 22:02:35,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7842d8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:35, skipping insertion in model container
[2020-07-21 22:02:35,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:35" (1/1) ...
[2020-07-21 22:02:35,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-21 22:02:35,258 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-21 22:02:35,426 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 22:02:35,432 INFO L203 MainTranslator]: Completed pre-run
[2020-07-21 22:02:35,447 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 22:02:35,466 INFO L208 MainTranslator]: Completed translation
[2020-07-21 22:02:35,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:35 WrapperNode
[2020-07-21 22:02:35,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-21 22:02:35,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-21 22:02:35,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-21 22:02:35,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-21 22:02:35,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:35" (1/1) ...
[2020-07-21 22:02:35,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:35" (1/1) ...
[2020-07-21 22:02:35,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:35" (1/1) ...
[2020-07-21 22:02:35,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:35" (1/1) ...
[2020-07-21 22:02:35,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:35" (1/1) ...
[2020-07-21 22:02:35,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:35" (1/1) ...
[2020-07-21 22:02:35,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:35" (1/1) ...
[2020-07-21 22:02:35,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-21 22:02:35,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-21 22:02:35,504 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-21 22:02:35,505 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-21 22:02:35,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:35" (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
[2020-07-21 22:02:35,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-21 22:02:35,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-21 22:02:35,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-21 22:02:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-21 22:02:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-21 22:02:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-21 22:02:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-21 22:02:35,844 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-21 22:02:35,845 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-07-21 22:02:35,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:35 BoogieIcfgContainer
[2020-07-21 22:02:35,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-21 22:02:35,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-21 22:02:35,852 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-21 22:02:35,854 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-21 22:02:35,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:02:35" (1/3) ...
[2020-07-21 22:02:35,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54445864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:35, skipping insertion in model container
[2020-07-21 22:02:35,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:35" (2/3) ...
[2020-07-21 22:02:35,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54445864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:35, skipping insertion in model container
[2020-07-21 22:02:35,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:35" (3/3) ...
[2020-07-21 22:02:35,859 INFO L109 eAbstractionObserver]: Analyzing ICFG implicitunsignedconversion-2.c
[2020-07-21 22:02:35,870 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-21 22:02:35,884 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-21 22:02:35,900 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-21 22:02:35,925 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-21 22:02:35,925 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-21 22:02:35,925 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-21 22:02:35,926 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-21 22:02:35,926 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-21 22:02:35,926 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-21 22:02:35,926 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-21 22:02:35,926 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-21 22:02:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states.
[2020-07-21 22:02:35,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2020-07-21 22:02:35,950 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 22:02:35,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2020-07-21 22:02:35,951 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 22:02:35,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 22:02:35,958 INFO L82 PathProgramCache]: Analyzing trace with hash 408836530, now seen corresponding path program 1 times
[2020-07-21 22:02:35,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 22:02:35,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753696805]
[2020-07-21 22:02:35,968 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
[2020-07-21 22:02:36,017 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-21 22:02:36,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 22:02:36,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 3 conjunts are in the unsatisfiable core
[2020-07-21 22:02:36,031 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 22:02:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 22:02:36,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 22:02:36,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753696805]
[2020-07-21 22:02:36,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 22:02:36,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 22:02:36,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761842593]
[2020-07-21 22:02:36,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 22:02:36,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 22:02:36,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 22:02:36,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 22:02:36,206 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states.
[2020-07-21 22:02:36,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 22:02:36,227 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions.
[2020-07-21 22:02:36,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-07-21 22:02:36,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7
[2020-07-21 22:02:36,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 22:02:36,236 INFO L225 Difference]: With dead ends: 16
[2020-07-21 22:02:36,236 INFO L226 Difference]: Without dead ends: 0
[2020-07-21 22:02:36,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 22:02:36,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-07-21 22:02:36,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-07-21 22:02:36,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-07-21 22:02:36,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-07-21 22:02:36,266 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7
[2020-07-21 22:02:36,267 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-21 22:02:36,267 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-07-21 22:02:36,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 22:02:36,267 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-07-21 22:02:36,267 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-07-21 22:02:36,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 22:02:36,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-07-21 22:02:36,540 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-07-21 22:02:36,540 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-07-21 22:02:36,540 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-07-21 22:02:36,541 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-07-21 22:02:36,541 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-07-21 22:02:36,541 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-07-21 22:02:36,541 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed.
[2020-07-21 22:02:36,542 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 3 14) the Hoare annotation is: true
[2020-07-21 22:02:36,542 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 3 14) no Hoare annotation was computed.
[2020-07-21 22:02:36,542 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 3 14) no Hoare annotation was computed.
[2020-07-21 22:02:36,542 INFO L264 CegarLoopResult]: At program point L8(lines 3 14) the Hoare annotation is: false
[2020-07-21 22:02:36,542 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed.
[2020-07-21 22:02:36,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:02:36 BoogieIcfgContainer
[2020-07-21 22:02:36,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-21 22:02:36,555 INFO L168 Benchmark]: Toolchain (without parser) took 1328.23 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 104.4 MB in the beginning and 149.7 MB in the end (delta: -45.3 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB.
[2020-07-21 22:02:36,557 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
[2020-07-21 22:02:36,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.90 ms. Allocated memory is still 139.5 MB. Free memory was 104.2 MB in the beginning and 95.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB.
[2020-07-21 22:02:36,561 INFO L168 Benchmark]: Boogie Preprocessor took 36.37 ms. Allocated memory is still 139.5 MB. Free memory was 95.0 MB in the beginning and 93.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
[2020-07-21 22:02:36,563 INFO L168 Benchmark]: RCFGBuilder took 346.09 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 93.6 MB in the beginning and 173.9 MB in the end (delta: -80.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB.
[2020-07-21 22:02:36,564 INFO L168 Benchmark]: TraceAbstraction took 700.30 ms. Allocated memory is still 203.9 MB. Free memory was 173.3 MB in the beginning and 149.7 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB.
[2020-07-21 22:02:36,574 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 239.90 ms. Allocated memory is still 139.5 MB. Free memory was 104.2 MB in the beginning and 95.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 36.37 ms. Allocated memory is still 139.5 MB. Free memory was 95.0 MB in the beginning and 93.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 346.09 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 93.6 MB in the beginning and 173.9 MB in the end (delta: -80.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 700.30 ms. Allocated memory is still 203.9 MB. Free memory was 173.3 MB in the beginning and 149.7 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable
For all program executions holds that call of __VERIFIER_error() unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 3]: Loop Invariant
Derived loop invariant: 0
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 2 SDslu, 6 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 2 NumberOfNonLiveVariables, 15 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 correct!
Received shutdown request...