/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 NOT_INCREMENTALLY -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
[2020-07-20 10:45:41,258 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-20 10:45:41,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 10:45:41,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 10:45:41,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 10:45:41,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 10:45:41,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 10:45:41,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 10:45:41,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 10:45:41,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 10:45:41,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 10:45:41,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 10:45:41,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 10:45:41,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 10:45:41,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 10:45:41,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 10:45:41,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 10:45:41,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 10:45:41,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 10:45:41,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 10:45:41,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 10:45:41,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 10:45:41,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 10:45:41,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 10:45:41,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 10:45:41,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 10:45:41,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 10:45:41,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 10:45:41,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 10:45:41,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 10:45:41,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 10:45:41,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 10:45:41,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
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[2020-07-20 10:45:41,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 10:45:41,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 10:45:41,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2020-07-20 10:45:41,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2020-07-20 10:45:41,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 10:45:41,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-07-20 10:45:41,323 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-20 10:45:41,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 10:45:41,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 10:45:41,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-20 10:45:41,325 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-20 10:45:41,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 10:45:41,326 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-20 10:45:41,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-20 10:45:41,326 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-20 10:45:41,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-20 10:45:41,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 10:45:41,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 10:45:41,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 10:45:41,327 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-20 10:45:41,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-20 10:45:41,328 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-20 10:45:41,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-20 10:45:41,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 10:45:41,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-20 10:45:41,328 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-20 10:45:41,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-20 10:45:41,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 10:45:41,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 10:45:41,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 10:45:41,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 10:45:41,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-20 10:45:41,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 10:45:41,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 10:45:41,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-20 10:45:41,331 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 -> NOT_INCREMENTALLY
[2020-07-20 10:45:41,633 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 10:45:41,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 10:45:41,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 10:45:41,650 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-20 10:45:41,651 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-20 10:45:41,651 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/implicitunsignedconversion-2.c
[2020-07-20 10:45:41,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b54ba46a/0d89d939fba44e9d8065702d051eaf24/FLAG7da9a91fb
[2020-07-20 10:45:42,135 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-20 10:45:42,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-regression/implicitunsignedconversion-2.c
[2020-07-20 10:45:42,142 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b54ba46a/0d89d939fba44e9d8065702d051eaf24/FLAG7da9a91fb
[2020-07-20 10:45:42,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b54ba46a/0d89d939fba44e9d8065702d051eaf24
[2020-07-20 10:45:42,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 10:45:42,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 10:45:42,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 10:45:42,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 10:45:42,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 10:45:42,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:42" (1/1) ...
[2020-07-20 10:45:42,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8e84bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:42, skipping insertion in model container
[2020-07-20 10:45:42,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:42" (1/1) ...
[2020-07-20 10:45:42,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-20 10:45:42,587 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-20 10:45:42,787 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 10:45:42,794 INFO L203 MainTranslator]: Completed pre-run
[2020-07-20 10:45:42,809 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 10:45:42,823 INFO L208 MainTranslator]: Completed translation
[2020-07-20 10:45:42,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:42 WrapperNode
[2020-07-20 10:45:42,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 10:45:42,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 10:45:42,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 10:45:42,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 10:45:42,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:42" (1/1) ...
[2020-07-20 10:45:42,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:42" (1/1) ...
[2020-07-20 10:45:42,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:42" (1/1) ...
[2020-07-20 10:45:42,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:42" (1/1) ...
[2020-07-20 10:45:42,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:42" (1/1) ...
[2020-07-20 10:45:42,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:42" (1/1) ...
[2020-07-20 10:45:42,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:42" (1/1) ...
[2020-07-20 10:45:42,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 10:45:42,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 10:45:42,855 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 10:45:42,856 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-20 10:45:42,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:42" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 10:45:43,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 10:45:43,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 10:45:43,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 10:45:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 10:45:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-20 10:45:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 10:45:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 10:45:43,144 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 10:45:43,145 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-07-20 10:45:43,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:43 BoogieIcfgContainer
[2020-07-20 10:45:43,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 10:45:43,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 10:45:43,151 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 10:45:43,154 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-20 10:45:43,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:45:42" (1/3) ...
[2020-07-20 10:45:43,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a33b586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:45:43, skipping insertion in model container
[2020-07-20 10:45:43,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:42" (2/3) ...
[2020-07-20 10:45:43,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a33b586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:45:43, skipping insertion in model container
[2020-07-20 10:45:43,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:43" (3/3) ...
[2020-07-20 10:45:43,159 INFO L109 eAbstractionObserver]: Analyzing ICFG implicitunsignedconversion-2.c
[2020-07-20 10:45:43,169 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 10:45:43,176 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-20 10:45:43,190 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-20 10:45:43,213 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-20 10:45:43,213 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-20 10:45:43,213 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 10:45:43,213 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 10:45:43,213 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 10:45:43,214 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-20 10:45:43,214 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 10:45:43,214 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 10:45:43,232 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states.
[2020-07-20 10:45:43,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2020-07-20 10:45:43,238 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 10:45:43,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2020-07-20 10:45:43,240 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 10:45:43,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 10:45:43,246 INFO L82 PathProgramCache]: Analyzing trace with hash 408836530, now seen corresponding path program 1 times
[2020-07-20 10:45:43,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 10:45:43,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787095823]
[2020-07-20 10:45:43,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 10:45:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-20 10:45:43,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 3 conjunts are in the unsatisfiable core
[2020-07-20 10:45:43,302 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 10:45:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 10:45:43,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 10:45:43,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787095823]
[2020-07-20 10:45:43,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 10:45:43,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-20 10:45:43,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688583153]
[2020-07-20 10:45:43,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-20 10:45:43,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 10:45:43,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-20 10:45:43,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 10:45:43,430 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states.
[2020-07-20 10:45:43,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 10:45:43,458 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions.
[2020-07-20 10:45:43,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-07-20 10:45:43,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7
[2020-07-20 10:45:43,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 10:45:43,469 INFO L225 Difference]: With dead ends: 16
[2020-07-20 10:45:43,469 INFO L226 Difference]: Without dead ends: 0
[2020-07-20 10:45:43,473 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
[2020-07-20 10:45:43,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-07-20 10:45:43,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-07-20 10:45:43,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-07-20 10:45:43,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-07-20 10:45:43,502 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7
[2020-07-20 10:45:43,502 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 10:45:43,502 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-07-20 10:45:43,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-20 10:45:43,502 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-07-20 10:45:43,503 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-07-20 10:45:43,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 10:45:43,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-07-20 10:45:43,769 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-07-20 10:45:43,769 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-07-20 10:45:43,769 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-07-20 10:45:43,770 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-07-20 10:45:43,770 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-07-20 10:45:43,770 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-07-20 10:45:43,770 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed.
[2020-07-20 10:45:43,771 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 3 14) the Hoare annotation is: true
[2020-07-20 10:45:43,771 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 3 14) no Hoare annotation was computed.
[2020-07-20 10:45:43,771 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 3 14) no Hoare annotation was computed.
[2020-07-20 10:45:43,771 INFO L264 CegarLoopResult]: At program point L8(lines 3 14) the Hoare annotation is: false
[2020-07-20 10:45:43,771 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed.
[2020-07-20 10:45:43,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:45:43 BoogieIcfgContainer
[2020-07-20 10:45:43,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 10:45:43,786 INFO L168 Benchmark]: Toolchain (without parser) took 1236.16 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 147.3 MB in the end (delta: -45.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB.
[2020-07-20 10:45:43,787 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB.
[2020-07-20 10:45:43,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.32 ms. Allocated memory is still 138.4 MB. Free memory was 101.6 MB in the beginning and 92.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB.
[2020-07-20 10:45:43,789 INFO L168 Benchmark]: Boogie Preprocessor took 29.09 ms. Allocated memory is still 138.4 MB. Free memory was 92.5 MB in the beginning and 91.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
[2020-07-20 10:45:43,790 INFO L168 Benchmark]: RCFGBuilder took 293.70 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 91.1 MB in the beginning and 171.5 MB in the end (delta: -80.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB.
[2020-07-20 10:45:43,791 INFO L168 Benchmark]: TraceAbstraction took 632.44 ms. Allocated memory is still 201.9 MB. Free memory was 171.5 MB in the beginning and 147.3 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB.
[2020-07-20 10:45:43,795 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.14 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 273.32 ms. Allocated memory is still 138.4 MB. Free memory was 101.6 MB in the beginning and 92.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 29.09 ms. Allocated memory is still 138.4 MB. Free memory was 92.5 MB in the beginning and 91.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 293.70 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 91.1 MB in the beginning and 171.5 MB in the end (delta: -80.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 632.44 ms. Allocated memory is still 201.9 MB. Free memory was 171.5 MB in the beginning and 147.3 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 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, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 2 NumberOfNonLiveVariables, 16 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...