/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_o100.c
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This is Ultimate 0.1.25-72570d3
[2020-08-22 18:54:56,445 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-08-22 18:54:56,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-22 18:54:56,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-22 18:54:56,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-22 18:54:56,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-22 18:54:56,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-22 18:54:56,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-22 18:54:56,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-22 18:54:56,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-22 18:54:56,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
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[2020-08-22 18:54:56,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-22 18:54:56,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-22 18:54:56,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-22 18:54:56,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-22 18:54:56,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-22 18:54:56,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-22 18:54:56,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-22 18:54:56,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-22 18:54:56,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-22 18:54:56,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-22 18:54:56,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-08-22 18:54:56,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-22 18:54:56,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-22 18:54:56,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-22 18:54:56,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-22 18:54:56,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
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[2020-08-22 18:54:56,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-08-22 18:54:56,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2020-08-22 18:54:56,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-08-22 18:54:56,517 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-08-22 18:54:56,528 INFO L113 SettingsManager]: Loading preferences was successful
[2020-08-22 18:54:56,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-22 18:54:56,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-22 18:54:56,530 INFO L138 SettingsManager]: * sizeof long=4
[2020-08-22 18:54:56,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-08-22 18:54:56,530 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-08-22 18:54:56,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-08-22 18:54:56,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-08-22 18:54:56,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-22 18:54:56,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-08-22 18:54:56,531 INFO L138 SettingsManager]: * sizeof long double=12
[2020-08-22 18:54:56,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-08-22 18:54:56,532 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-08-22 18:54:56,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-08-22 18:54:56,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-22 18:54:56,533 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2020-08-22 18:54:56,533 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-08-22 18:54:56,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-08-22 18:54:56,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-22 18:54:56,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-22 18:54:56,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-08-22 18:54:56,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-22 18:54:56,534 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
[2020-08-22 18:54:56,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-22 18:54:56,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-22 18:54:56,924 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-22 18:54:56,926 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-08-22 18:54:56,927 INFO L275 PluginConnector]: CDTParser initialized
[2020-08-22 18:54:56,928 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o100.c
[2020-08-22 18:54:57,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dca76b61e/a51e836ca4f64bed885cc4adbcae5019/FLAG1ef488deb
[2020-08-22 18:54:57,636 INFO L306 CDTParser]: Found 1 translation units.
[2020-08-22 18:54:57,637 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_o100.c
[2020-08-22 18:54:57,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dca76b61e/a51e836ca4f64bed885cc4adbcae5019/FLAG1ef488deb
[2020-08-22 18:54:57,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dca76b61e/a51e836ca4f64bed885cc4adbcae5019
[2020-08-22 18:54:57,997 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-22 18:54:57,999 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-22 18:54:58,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-22 18:54:58,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-22 18:54:58,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-22 18:54:58,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:54:57" (1/1) ...
[2020-08-22 18:54:58,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55cd9597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:54:58, skipping insertion in model container
[2020-08-22 18:54:58,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:54:57" (1/1) ...
[2020-08-22 18:54:58,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-08-22 18:54:58,044 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-08-22 18:54:58,286 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-08-22 18:54:58,296 INFO L203 MainTranslator]: Completed pre-run
[2020-08-22 18:54:58,318 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-08-22 18:54:58,336 INFO L208 MainTranslator]: Completed translation
[2020-08-22 18:54:58,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:54:58 WrapperNode
[2020-08-22 18:54:58,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-22 18:54:58,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-22 18:54:58,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-22 18:54:58,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-08-22 18:54:58,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:54:58" (1/1) ...
[2020-08-22 18:54:58,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:54:58" (1/1) ...
[2020-08-22 18:54:58,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:54:58" (1/1) ...
[2020-08-22 18:54:58,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:54:58" (1/1) ...
[2020-08-22 18:54:58,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:54:58" (1/1) ...
[2020-08-22 18:54:58,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:54:58" (1/1) ...
[2020-08-22 18:54:58,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:54:58" (1/1) ...
[2020-08-22 18:54:58,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-22 18:54:58,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-22 18:54:58,369 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-08-22 18:54:58,369 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-08-22 18:54:58,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:54:58" (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
[2020-08-22 18:54:58,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-22 18:54:58,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-22 18:54:58,572 INFO L138 BoogieDeclarations]: Found implementation of procedure id
[2020-08-22 18:54:58,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-08-22 18:54:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint
[2020-08-22 18:54:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-22 18:54:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure id
[2020-08-22 18:54:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-08-22 18:54:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-22 18:54:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-22 18:54:58,764 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-22 18:54:58,764 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-08-22 18:54:58,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:54:58 BoogieIcfgContainer
[2020-08-22 18:54:58,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-22 18:54:58,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-22 18:54:58,772 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-08-22 18:54:58,776 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-08-22 18:54:58,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:54:57" (1/3) ...
[2020-08-22 18:54:58,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c893ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:54:58, skipping insertion in model container
[2020-08-22 18:54:58,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:54:58" (2/3) ...
[2020-08-22 18:54:58,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c893ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:54:58, skipping insertion in model container
[2020-08-22 18:54:58,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:54:58" (3/3) ...
[2020-08-22 18:54:58,781 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o100.c
[2020-08-22 18:54:58,794 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-22 18:54:58,803 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-22 18:54:58,820 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-22 18:54:58,848 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-08-22 18:54:58,848 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-08-22 18:54:58,849 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2020-08-22 18:54:58,849 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-22 18:54:58,850 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-22 18:54:58,850 INFO L380 AbstractCegarLoop]: Difference is false
[2020-08-22 18:54:58,850 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-22 18:54:58,850 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-22 18:54:58,867 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states.
[2020-08-22 18:54:58,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-08-22 18:54:58,880 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-22 18:54:58,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-22 18:54:58,882 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 18:54:58,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 18:54:58,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times
[2020-08-22 18:54:58,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 18:54:58,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289865516]
[2020-08-22 18:54:58,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 18:54:58,960 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-08-22 18:54:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 18:54:59,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 18:54:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 18:54:59,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-22 18:54:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 18:54:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-22 18:54:59,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289865516]
[2020-08-22 18:54:59,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 18:54:59,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-08-22 18:54:59,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995368050]
[2020-08-22 18:54:59,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-08-22 18:54:59,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 18:54:59,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-08-22 18:54:59,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-08-22 18:54:59,269 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states.
[2020-08-22 18:54:59,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 18:54:59,452 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions.
[2020-08-22 18:54:59,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-08-22 18:54:59,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16
[2020-08-22 18:54:59,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 18:54:59,471 INFO L225 Difference]: With dead ends: 37
[2020-08-22 18:54:59,471 INFO L226 Difference]: Without dead ends: 22
[2020-08-22 18:54:59,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-08-22 18:54:59,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2020-08-22 18:54:59,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2020-08-22 18:54:59,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2020-08-22 18:54:59,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions.
[2020-08-22 18:54:59,527 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16
[2020-08-22 18:54:59,528 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-22 18:54:59,528 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions.
[2020-08-22 18:54:59,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-08-22 18:54:59,528 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions.
[2020-08-22 18:54:59,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-08-22 18:54:59,534 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-22 18:54:59,534 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-22 18:54:59,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-22 18:54:59,535 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 18:54:59,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 18:54:59,536 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times
[2020-08-22 18:54:59,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 18:54:59,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490375790]
[2020-08-22 18:54:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 18:55:00,338 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 27
[2020-08-22 18:55:00,368 INFO L278 leratedInterpolation]: Starting analysis with loop acceleration approximation PRECISE
[2020-08-22 18:55:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-22 18:55:00,398 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-08-22 18:55:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-22 18:55:00,414 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-08-22 18:55:00,436 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-22 18:55:00,436 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-08-22 18:55:00,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-22 18:55:00,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:55:00 BoogieIcfgContainer
[2020-08-22 18:55:00,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-22 18:55:00,458 INFO L168 Benchmark]: Toolchain (without parser) took 2458.44 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 129.9 MB in the end (delta: -28.5 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB.
[2020-08-22 18:55:00,460 INFO L168 Benchmark]: CDTParser took 0.93 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB.
[2020-08-22 18:55:00,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.92 ms. Allocated memory is still 137.4 MB. Free memory was 100.9 MB in the beginning and 91.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB.
[2020-08-22 18:55:00,462 INFO L168 Benchmark]: Boogie Preprocessor took 30.30 ms. Allocated memory is still 137.4 MB. Free memory was 91.9 MB in the beginning and 90.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB.
[2020-08-22 18:55:00,463 INFO L168 Benchmark]: RCFGBuilder took 401.40 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 90.5 MB in the beginning and 169.9 MB in the end (delta: -79.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB.
[2020-08-22 18:55:00,464 INFO L168 Benchmark]: TraceAbstraction took 1683.87 ms. Allocated memory is still 201.3 MB. Free memory was 169.0 MB in the beginning and 129.9 MB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB.
[2020-08-22 18:55:00,469 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.93 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 335.92 ms. Allocated memory is still 137.4 MB. Free memory was 100.9 MB in the beginning and 91.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 30.30 ms. Allocated memory is still 137.4 MB. Free memory was 91.9 MB in the beginning and 90.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 401.40 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 90.5 MB in the beginning and 169.9 MB in the end (delta: -79.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1683.87 ms. Allocated memory is still 201.3 MB. Free memory was 169.0 MB in the beginning and 129.9 MB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L10] unsigned int input = __VERIFIER_nondet_uint();
[L11] CALL, EXPR id(input)
[L5] COND FALSE !(x==0)
[L6] CALL, EXPR id(x-1)
[L5] COND TRUE x==0
[L5] return 0;
[L6] RET, EXPR id(x-1)
[L6] return id(x-1) + 1;
[L11] RET, EXPR id(input)
[L11] unsigned int result = id(input);
[L12] COND TRUE result == 100
[L13] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 3 SDslu, 65 SDs, 0 SdLazy, 11 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...