java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loop-invariants/eq1.c
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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 22:58:22,891 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2019-10-13 22:58:22,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-13 22:58:22,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-13 22:58:22,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-13 22:58:22,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-13 22:58:22,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-13 22:58:22,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-13 22:58:22,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-13 22:58:22,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-13 22:58:22,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2019-10-13 22:58:22,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-13 22:58:22,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-13 22:58:22,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-13 22:58:22,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-13 22:58:22,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 22:58:22,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 22:58:22,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 22:58:22,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 22:58:22,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-13 22:58:22,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-13 22:58:22,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-13 22:58:22,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2019-10-13 22:58:22,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-13 22:58:22,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-13 22:58:22,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-13 22:58:22,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-13 22:58:22,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-13 22:58:22,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-13 22:58:22,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-13 22:58:22,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-13 22:58:22,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-13 22:58:22,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
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[2019-10-13 22:58:22,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
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[2019-10-13 22:58:22,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2019-10-13 22:58:22,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2019-10-13 22:58:22,960 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
[2019-10-13 22:58:22,990 INFO L113 SettingsManager]: Loading preferences was successful
[2019-10-13 22:58:22,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 22:58:22,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 22:58:22,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2019-10-13 22:58:22,992 INFO L138 SettingsManager]: * Use SBE=true
[2019-10-13 22:58:22,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 22:58:22,993 INFO L138 SettingsManager]: * sizeof long=4
[2019-10-13 22:58:22,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2019-10-13 22:58:22,994 INFO L138 SettingsManager]: * sizeof POINTER=4
[2019-10-13 22:58:22,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2019-10-13 22:58:22,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 22:58:22,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 22:58:22,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 22:58:22,995 INFO L138 SettingsManager]: * sizeof long double=12
[2019-10-13 22:58:22,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2019-10-13 22:58:22,996 INFO L138 SettingsManager]: * Use constant arrays=true
[2019-10-13 22:58:22,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2019-10-13 22:58:22,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 22:58:22,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2019-10-13 22:58:22,998 INFO L138 SettingsManager]: * To the following directory=./dump/
[2019-10-13 22:58:22,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2019-10-13 22:58:22,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 22:58:22,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 22:58:22,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 22:58:22,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 22:58:22,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2019-10-13 22:58:22,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 22:58:22,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 22:58:23,000 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK
[2019-10-13 22:58:23,278 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 22:58:23,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 22:58:23,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 22:58:23,295 INFO L271 PluginConnector]: Initializing CDTParser...
[2019-10-13 22:58:23,296 INFO L275 PluginConnector]: CDTParser initialized
[2019-10-13 22:58:23,297 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq1.c
[2019-10-13 22:58:23,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6ec9148/9580dc9a1c24424a8fe6095413f97646/FLAG14b57a1e3
[2019-10-13 22:58:23,804 INFO L306 CDTParser]: Found 1 translation units.
[2019-10-13 22:58:23,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/eq1.c
[2019-10-13 22:58:23,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6ec9148/9580dc9a1c24424a8fe6095413f97646/FLAG14b57a1e3
[2019-10-13 22:58:24,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6ec9148/9580dc9a1c24424a8fe6095413f97646
[2019-10-13 22:58:24,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 22:58:24,214 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 22:58:24,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 22:58:24,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 22:58:24,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 22:58:24,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:58:24" (1/1) ...
[2019-10-13 22:58:24,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@516e4b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:24, skipping insertion in model container
[2019-10-13 22:58:24,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:58:24" (1/1) ...
[2019-10-13 22:58:24,236 INFO L142 MainTranslator]: Starting translation in SV-COMP mode
[2019-10-13 22:58:24,255 INFO L173 MainTranslator]: Built tables and reachable declarations
[2019-10-13 22:58:24,485 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-10-13 22:58:24,492 INFO L188 MainTranslator]: Completed pre-run
[2019-10-13 22:58:24,509 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-10-13 22:58:24,523 INFO L192 MainTranslator]: Completed translation
[2019-10-13 22:58:24,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:24 WrapperNode
[2019-10-13 22:58:24,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 22:58:24,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 22:58:24,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 22:58:24,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 22:58:24,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:24" (1/1) ...
[2019-10-13 22:58:24,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:24" (1/1) ...
[2019-10-13 22:58:24,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:24" (1/1) ...
[2019-10-13 22:58:24,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:24" (1/1) ...
[2019-10-13 22:58:24,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:24" (1/1) ...
[2019-10-13 22:58:24,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:24" (1/1) ...
[2019-10-13 22:58:24,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:24" (1/1) ...
[2019-10-13 22:58:24,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 22:58:24,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 22:58:24,638 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 22:58:24,638 INFO L275 PluginConnector]: RCFGBuilder initialized
[2019-10-13 22:58:24,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:24" (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
[2019-10-13 22:58:24,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 22:58:24,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 22:58:24,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2019-10-13 22:58:24,691 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 22:58:24,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 22:58:24,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint
[2019-10-13 22:58:24,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2019-10-13 22:58:24,692 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2019-10-13 22:58:24,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 22:58:24,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 22:58:24,999 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 22:58:24,999 INFO L284 CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-13 22:58:25,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:58:25 BoogieIcfgContainer
[2019-10-13 22:58:25,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 22:58:25,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 22:58:25,003 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 22:58:25,010 INFO L275 PluginConnector]: TraceAbstraction initialized
[2019-10-13 22:58:25,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:58:24" (1/3) ...
[2019-10-13 22:58:25,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4adda360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:58:25, skipping insertion in model container
[2019-10-13 22:58:25,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:24" (2/3) ...
[2019-10-13 22:58:25,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4adda360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:58:25, skipping insertion in model container
[2019-10-13 22:58:25,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:58:25" (3/3) ...
[2019-10-13 22:58:25,020 INFO L109 eAbstractionObserver]: Analyzing ICFG eq1.c
[2019-10-13 22:58:25,039 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 22:58:25,048 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 22:58:25,058 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 22:58:25,081 INFO L373 AbstractCegarLoop]: Interprodecural is true
[2019-10-13 22:58:25,081 INFO L374 AbstractCegarLoop]: Hoare is true
[2019-10-13 22:58:25,081 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 22:58:25,082 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 22:58:25,082 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 22:58:25,082 INFO L378 AbstractCegarLoop]: Difference is false
[2019-10-13 22:58:25,082 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 22:58:25,082 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 22:58:25,100 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states.
[2019-10-13 22:58:25,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2019-10-13 22:58:25,106 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 22:58:25,107 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 22:58:25,109 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 22:58:25,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 22:58:25,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1733570904, now seen corresponding path program 1 times
[2019-10-13 22:58:25,123 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 22:58:25,123 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127534569]
[2019-10-13 22:58:25,123 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 22:58:25,124 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 22:58:25,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 22:58:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 22:58:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 22:58:25,393 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127534569]
[2019-10-13 22:58:25,394 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 22:58:25,395 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-13 22:58:25,395 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345111536]
[2019-10-13 22:58:25,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 22:58:25,400 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 22:58:25,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 22:58:25,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-13 22:58:25,415 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states.
[2019-10-13 22:58:25,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 22:58:25,478 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions.
[2019-10-13 22:58:25,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2019-10-13 22:58:25,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10
[2019-10-13 22:58:25,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 22:58:25,487 INFO L225 Difference]: With dead ends: 23
[2019-10-13 22:58:25,488 INFO L226 Difference]: Without dead ends: 0
[2019-10-13 22:58:25,491 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-13 22:58:25,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2019-10-13 22:58:25,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2019-10-13 22:58:25,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2019-10-13 22:58:25,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2019-10-13 22:58:25,514 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10
[2019-10-13 22:58:25,514 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 22:58:25,515 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2019-10-13 22:58:25,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 22:58:25,515 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2019-10-13 22:58:25,515 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2019-10-13 22:58:25,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2019-10-13 22:58:25,561 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2019-10-13 22:58:25,561 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2019-10-13 22:58:25,562 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2019-10-13 22:58:25,562 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true
[2019-10-13 22:58:25,563 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2019-10-13 22:58:25,563 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2019-10-13 22:58:25,563 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 9 23) the Hoare annotation is: true
[2019-10-13 22:58:25,564 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 9 23) no Hoare annotation was computed.
[2019-10-13 22:58:25,564 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed.
[2019-10-13 22:58:25,564 INFO L439 ceAbstractionStarter]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (= main_~w~0 main_~x~0) (= main_~z~0 main_~y~0))
[2019-10-13 22:58:25,565 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 14 20) the Hoare annotation is: (and (= main_~w~0 main_~x~0) (= main_~z~0 main_~y~0))
[2019-10-13 22:58:25,565 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed.
[2019-10-13 22:58:25,566 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true
[2019-10-13 22:58:25,566 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed.
[2019-10-13 22:58:25,566 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed.
[2019-10-13 22:58:25,566 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed.
[2019-10-13 22:58:25,566 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed.
[2019-10-13 22:58:25,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:58:25 BoogieIcfgContainer
[2019-10-13 22:58:25,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2019-10-13 22:58:25,584 INFO L168 Benchmark]: Toolchain (without parser) took 1369.09 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 104.4 MB in the beginning and 137.4 MB in the end (delta: -33.0 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB.
[2019-10-13 22:58:25,586 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2019-10-13 22:58:25,588 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.51 ms. Allocated memory is still 139.5 MB. Free memory was 104.2 MB in the beginning and 94.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
[2019-10-13 22:58:25,591 INFO L168 Benchmark]: Boogie Preprocessor took 112.93 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 94.8 MB in the beginning and 180.7 MB in the end (delta: -85.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB.
[2019-10-13 22:58:25,592 INFO L168 Benchmark]: RCFGBuilder took 363.83 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 166.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB.
[2019-10-13 22:58:25,594 INFO L168 Benchmark]: TraceAbstraction took 578.62 ms. Allocated memory is still 202.4 MB. Free memory was 166.6 MB in the beginning and 137.4 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB.
[2019-10-13 22:58:25,605 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 308.51 ms. Allocated memory is still 139.5 MB. Free memory was 104.2 MB in the beginning and 94.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 112.93 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 94.8 MB in the beginning and 180.7 MB in the end (delta: -85.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 363.83 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 166.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 578.62 ms. Allocated memory is still 202.4 MB. Free memory was 166.6 MB in the beginning and 137.4 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 5]: 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: 14]: Loop Invariant
Derived loop invariant: w == x && z == y
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 17 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 6 SDslu, 27 SDs, 0 SdLazy, 10 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 19 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be correct!
Received shutdown request...