/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-1.c
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This is Ultimate 0.1.25-d623d84
[2020-07-21 22:02:33,166 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-21 22:02:33,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-21 22:02:33,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-21 22:02:33,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-21 22:02:33,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-21 22:02:33,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-21 22:02:33,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-21 22:02:33,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-21 22:02:33,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-21 22:02:33,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-21 22:02:33,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-21 22:02:33,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-21 22:02:33,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-21 22:02:33,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-21 22:02:33,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-21 22:02:33,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-21 22:02:33,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-21 22:02:33,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-21 22:02:33,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-21 22:02:33,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-21 22:02:33,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-21 22:02:33,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-21 22:02:33,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-21 22:02:33,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-21 22:02:33,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-21 22:02:33,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-21 22:02:33,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-21 22:02:33,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-21 22:02:33,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-21 22:02:33,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-21 22:02:33,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-21 22:02:33,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-21 22:02:33,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-21 22:02:33,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-21 22:02:33,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-21 22:02:33,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-21 22:02:33,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-21 22:02:33,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-21 22:02:33,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-21 22:02:33,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-21 22:02:33,223 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 22:02:33,237 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-21 22:02:33,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-21 22:02:33,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-21 22:02:33,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-21 22:02:33,239 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-21 22:02:33,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-21 22:02:33,239 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-21 22:02:33,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-21 22:02:33,240 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-21 22:02:33,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-21 22:02:33,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-21 22:02:33,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-21 22:02:33,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-21 22:02:33,241 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-21 22:02:33,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-21 22:02:33,241 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-21 22:02:33,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-21 22:02:33,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-21 22:02:33,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-21 22:02:33,242 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-21 22:02:33,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-21 22:02:33,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 22:02:33,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-21 22:02:33,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-21 22:02:33,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-21 22:02:33,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-21 22:02:33,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 22:02:33,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-21 22:02:33,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-21 22:02:33,244 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 22:02:33,530 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-21 22:02:33,543 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-21 22:02:33,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-21 22:02:33,548 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-21 22:02:33,548 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-21 22:02:33,549 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/implicitunsignedconversion-1.c
[2020-07-21 22:02:33,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4d2d2210/7a3b1ba42fc24e1ab433614cd34bc948/FLAG6ec00da6c
[2020-07-21 22:02:34,078 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-21 22:02:34,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-regression/implicitunsignedconversion-1.c
[2020-07-21 22:02:34,083 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4d2d2210/7a3b1ba42fc24e1ab433614cd34bc948/FLAG6ec00da6c
[2020-07-21 22:02:34,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4d2d2210/7a3b1ba42fc24e1ab433614cd34bc948
[2020-07-21 22:02:34,509 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-21 22:02:34,513 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-21 22:02:34,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-21 22:02:34,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-21 22:02:34,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-21 22:02:34,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:34" (1/1) ...
[2020-07-21 22:02:34,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82fd315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:34, skipping insertion in model container
[2020-07-21 22:02:34,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:34" (1/1) ...
[2020-07-21 22:02:34,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-21 22:02:34,548 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-21 22:02:34,701 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 22:02:34,711 INFO L203 MainTranslator]: Completed pre-run
[2020-07-21 22:02:34,722 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 22:02:34,732 INFO L208 MainTranslator]: Completed translation
[2020-07-21 22:02:34,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:34 WrapperNode
[2020-07-21 22:02:34,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-21 22:02:34,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-21 22:02:34,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-21 22:02:34,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-21 22:02:34,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:34" (1/1) ...
[2020-07-21 22:02:34,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:34" (1/1) ...
[2020-07-21 22:02:34,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:34" (1/1) ...
[2020-07-21 22:02:34,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:34" (1/1) ...
[2020-07-21 22:02:34,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:34" (1/1) ...
[2020-07-21 22:02:34,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:34" (1/1) ...
[2020-07-21 22:02:34,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:34" (1/1) ...
[2020-07-21 22:02:34,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-21 22:02:34,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-21 22:02:34,836 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-21 22:02:34,836 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-21 22:02:34,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:34" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 22:02:34,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-21 22:02:34,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-21 22:02:34,901 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-21 22:02:34,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-21 22:02:34,901 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-21 22:02:34,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-21 22:02:34,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-21 22:02:35,031 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-21 22:02:35,031 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-07-21 22:02:35,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:35 BoogieIcfgContainer
[2020-07-21 22:02:35,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-21 22:02:35,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-21 22:02:35,037 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-21 22:02:35,039 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-21 22:02:35,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:02:34" (1/3) ...
[2020-07-21 22:02:35,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd0db7c 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 22:02:35,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:34" (2/3) ...
[2020-07-21 22:02:35,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd0db7c 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 22:02:35,042 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 22:02:35,044 INFO L109 eAbstractionObserver]: Analyzing ICFG implicitunsignedconversion-1.c
[2020-07-21 22:02:35,055 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-21 22:02:35,067 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-21 22:02:35,080 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-21 22:02:35,100 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-21 22:02:35,101 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-21 22:02:35,101 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-21 22:02:35,101 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-21 22:02:35,101 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-21 22:02:35,101 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-21 22:02:35,101 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-21 22:02:35,102 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-21 22:02:35,117 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states.
[2020-07-21 22:02:35,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2020-07-21 22:02:35,122 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 22:02:35,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2020-07-21 22:02:35,123 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 22:02:35,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 22:02:35,129 INFO L82 PathProgramCache]: Analyzing trace with hash 408836530, now seen corresponding path program 1 times
[2020-07-21 22:02:35,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 22:02:35,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047302588]
[2020-07-21 22:02:35,136 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 22:02:35,192 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-21 22:02:35,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat
[2020-07-21 22:02:35,193 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 22:02:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-21 22:02:35,198 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 22:02:35,210 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-21 22:02:35,211 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-21 22:02:35,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 22:02:35,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:02:35 BoogieIcfgContainer
[2020-07-21 22:02:35,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-21 22:02:35,446 INFO L168 Benchmark]: Toolchain (without parser) took 933.39 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 102.5 MB in the beginning and 157.0 MB in the end (delta: -54.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
[2020-07-21 22:02:35,446 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-07-21 22:02:35,447 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.60 ms. Allocated memory is still 137.9 MB. Free memory was 102.1 MB in the beginning and 92.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB.
[2020-07-21 22:02:35,450 INFO L168 Benchmark]: Boogie Preprocessor took 102.16 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 92.6 MB in the beginning and 181.1 MB in the end (delta: -88.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB.
[2020-07-21 22:02:35,450 INFO L168 Benchmark]: RCFGBuilder took 198.75 ms. Allocated memory is still 201.9 MB. Free memory was 181.1 MB in the beginning and 171.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
[2020-07-21 22:02:35,451 INFO L168 Benchmark]: TraceAbstraction took 406.75 ms. Allocated memory is still 201.9 MB. Free memory was 170.5 MB in the beginning and 157.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB.
[2020-07-21 22:02:35,455 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 217.60 ms. Allocated memory is still 137.9 MB. Free memory was 102.1 MB in the beginning and 92.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 102.16 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 92.6 MB in the beginning and 181.1 MB in the end (delta: -88.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 198.75 ms. Allocated memory is still 201.9 MB. Free memory was 181.1 MB in the beginning and 171.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 406.75 ms. Allocated memory is still 201.9 MB. Free memory was 170.5 MB in the beginning and 157.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L4] unsigned int plus_one = 1;
[L5] int minus_one = -1;
VAL [minus_one=-1, plus_one=1]
[L7] COND TRUE plus_one < minus_one
VAL [minus_one=-1, plus_one=1]
[L12] __VERIFIER_error()
VAL [minus_one=-1, plus_one=1]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...