/usr/bin/java -ea -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/loop-acceleration/phases_2-1.c


--------------------------------------------------------------------------------


This is Ultimate 0.1.25-267fbe0
[2020-07-18 00:48:16,954 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2020-07-18 00:48:16,984 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-18 00:48:16,985 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2020-07-18 00:48:17,007 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-07-18 00:48:17,016 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-07-18 00:48:17,016 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-18 00:48:17,017 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-18 00:48:17,017 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-07-18 00:48:17,018 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-07-18 00:48:17,018 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-07-18 00:48:17,018 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-07-18 00:48:17,018 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-07-18 00:48:17,018 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-18 00:48:17,019 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-07-18 00:48:17,019 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-07-18 00:48:17,019 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-07-18 00:48:17,019 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-07-18 00:48:17,019 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-07-18 00:48:17,020 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-18 00:48:17,020 INFO  L138        SettingsManager]:  * Size of a code block=SingleStatement
[2020-07-18 00:48:17,020 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-07-18 00:48:17,020 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-07-18 00:48:17,021 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-18 00:48:17,021 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-18 00:48:17,021 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-07-18 00:48:17,021 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-18 00:48:17,021 INFO  L138        SettingsManager]:  * Use separate solver for trace checks=false
[2020-07-18 00:48:17,292 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-18 00:48:17,304 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-18 00:48:17,307 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-18 00:48:17,309 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-07-18 00:48:17,309 INFO  L275        PluginConnector]: CDTParser initialized
[2020-07-18 00:48:17,310 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_2-1.c
[2020-07-18 00:48:17,379 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8e7d664b/934789bc79d84d20bc48205a7cd0aa89/FLAG43b804cfa
[2020-07-18 00:48:17,778 INFO  L306              CDTParser]: Found 1 translation units.
[2020-07-18 00:48:17,779 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-1.c
[2020-07-18 00:48:17,785 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8e7d664b/934789bc79d84d20bc48205a7cd0aa89/FLAG43b804cfa
[2020-07-18 00:48:18,208 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8e7d664b/934789bc79d84d20bc48205a7cd0aa89
[2020-07-18 00:48:18,220 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-18 00:48:18,225 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-18 00:48:18,228 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-18 00:48:18,228 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-18 00:48:18,232 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-18 00:48:18,234 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:48:18" (1/1) ...
[2020-07-18 00:48:18,238 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@221ba80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18, skipping insertion in model container
[2020-07-18 00:48:18,238 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:48:18" (1/1) ...
[2020-07-18 00:48:18,247 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-07-18 00:48:18,262 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-07-18 00:48:18,426 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-18 00:48:18,431 INFO  L203         MainTranslator]: Completed pre-run
[2020-07-18 00:48:18,449 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-18 00:48:18,465 INFO  L208         MainTranslator]: Completed translation
[2020-07-18 00:48:18,465 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18 WrapperNode
[2020-07-18 00:48:18,465 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-18 00:48:18,466 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-18 00:48:18,466 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-18 00:48:18,466 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-07-18 00:48:18,480 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18" (1/1) ...
[2020-07-18 00:48:18,481 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18" (1/1) ...
[2020-07-18 00:48:18,485 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18" (1/1) ...
[2020-07-18 00:48:18,485 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18" (1/1) ...
[2020-07-18 00:48:18,491 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18" (1/1) ...
[2020-07-18 00:48:18,496 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18" (1/1) ...
[2020-07-18 00:48:18,497 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18" (1/1) ...
[2020-07-18 00:48:18,578 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-18 00:48:18,581 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-18 00:48:18,581 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-07-18 00:48:18,581 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-07-18 00:48:18,582 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18" (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
[2020-07-18 00:48:18,646 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-18 00:48:18,647 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-18 00:48:18,647 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-07-18 00:48:18,647 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-07-18 00:48:18,647 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-07-18 00:48:18,647 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-18 00:48:18,647 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-07-18 00:48:18,648 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-07-18 00:48:18,648 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint
[2020-07-18 00:48:18,648 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-07-18 00:48:18,648 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-07-18 00:48:18,648 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-18 00:48:18,648 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-18 00:48:18,984 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-18 00:48:18,984 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-07-18 00:48:18,988 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:48:18 BoogieIcfgContainer
[2020-07-18 00:48:18,988 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-18 00:48:18,989 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-18 00:48:18,989 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-07-18 00:48:18,993 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-07-18 00:48:18,993 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:48:18" (1/3) ...
[2020-07-18 00:48:18,994 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e1f589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:48:18, skipping insertion in model container
[2020-07-18 00:48:18,995 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:18" (2/3) ...
[2020-07-18 00:48:18,995 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17e1f589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:48:18, skipping insertion in model container
[2020-07-18 00:48:18,995 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:48:18" (3/3) ...
[2020-07-18 00:48:18,997 INFO  L109   eAbstractionObserver]: Analyzing ICFG phases_2-1.c
[2020-07-18 00:48:19,008 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-07-18 00:48:19,016 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-18 00:48:19,030 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-18 00:48:19,060 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-07-18 00:48:19,060 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-07-18 00:48:19,060 INFO  L377      AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2020-07-18 00:48:19,060 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-18 00:48:19,060 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-18 00:48:19,060 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-07-18 00:48:19,061 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-18 00:48:19,061 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-18 00:48:19,074 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states.
[2020-07-18 00:48:19,084 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-07-18 00:48:19,084 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-18 00:48:19,086 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-18 00:48:19,086 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-18 00:48:19,092 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-18 00:48:19,093 INFO  L82        PathProgramCache]: Analyzing trace with hash 31250732, now seen corresponding path program 1 times
[2020-07-18 00:48:19,102 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-18 00:48:19,102 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875327844]
[2020-07-18 00:48:19,103 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-07-18 00:48:19,182 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-18 00:48:19,228 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-18 00:48:19,245 INFO  L280        TraceCheckUtils]: 0: Hoare triple {29#true} assume true; {29#true} is VALID
[2020-07-18 00:48:19,245 INFO  L275        TraceCheckUtils]: 1: Hoare quadruple {29#true} {29#true} #57#return; {29#true} is VALID
[2020-07-18 00:48:19,247 INFO  L263        TraceCheckUtils]: 0: Hoare triple {29#true} call ULTIMATE.init(); {29#true} is VALID
[2020-07-18 00:48:19,247 INFO  L280        TraceCheckUtils]: 1: Hoare triple {29#true} assume true; {29#true} is VALID
[2020-07-18 00:48:19,248 INFO  L275        TraceCheckUtils]: 2: Hoare quadruple {29#true} {29#true} #57#return; {29#true} is VALID
[2020-07-18 00:48:19,248 INFO  L263        TraceCheckUtils]: 3: Hoare triple {29#true} call #t~ret2 := main(); {29#true} is VALID
[2020-07-18 00:48:19,248 INFO  L280        TraceCheckUtils]: 4: Hoare triple {29#true} ~x~0 := 1; {29#true} is VALID
[2020-07-18 00:48:19,249 INFO  L280        TraceCheckUtils]: 5: Hoare triple {29#true} ~y~0 := #t~nondet0; {29#true} is VALID
[2020-07-18 00:48:19,249 INFO  L280        TraceCheckUtils]: 6: Hoare triple {29#true} havoc #t~nondet0; {29#true} is VALID
[2020-07-18 00:48:19,250 INFO  L280        TraceCheckUtils]: 7: Hoare triple {29#true} assume !!(~y~0 % 4294967296 > 0); {29#true} is VALID
[2020-07-18 00:48:19,251 INFO  L280        TraceCheckUtils]: 8: Hoare triple {29#true} assume !true; {30#false} is VALID
[2020-07-18 00:48:19,251 INFO  L263        TraceCheckUtils]: 9: Hoare triple {30#false} call __VERIFIER_assert((if ~x~0 % 4294967296 != ~y~0 % 4294967296 then 1 else 0)); {30#false} is VALID
[2020-07-18 00:48:19,251 INFO  L280        TraceCheckUtils]: 10: Hoare triple {30#false} ~cond := #in~cond; {30#false} is VALID
[2020-07-18 00:48:19,252 INFO  L280        TraceCheckUtils]: 11: Hoare triple {30#false} assume 0 == ~cond; {30#false} is VALID
[2020-07-18 00:48:19,252 INFO  L280        TraceCheckUtils]: 12: Hoare triple {30#false} assume !false; {30#false} is VALID
[2020-07-18 00:48:19,254 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-18 00:48:19,257 INFO  L192   leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration
[2020-07-18 00:48:19,259 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875327844]
[2020-07-18 00:48:19,261 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-18 00:48:19,261 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-07-18 00:48:19,262 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6184475]
[2020-07-18 00:48:19,268 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 13
[2020-07-18 00:48:19,271 INFO  L84                 Accepts]: Finished accepts. word is accepted.
[2020-07-18 00:48:19,275 INFO  L86        InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states.
[2020-07-18 00:48:19,312 INFO  L119       InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 
[2020-07-18 00:48:19,313 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-07-18 00:48:19,313 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-18 00:48:19,320 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-07-18 00:48:19,321 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-18 00:48:19,323 INFO  L87              Difference]: Start difference. First operand 26 states. Second operand 2 states.
[2020-07-18 00:48:19,446 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-18 00:48:19,447 INFO  L93              Difference]: Finished difference Result 37 states and 42 transitions.
[2020-07-18 00:48:19,447 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2020-07-18 00:48:19,447 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 13
[2020-07-18 00:48:19,448 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-18 00:48:19,449 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2020-07-18 00:48:19,463 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 42 transitions.
[2020-07-18 00:48:19,464 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2020-07-18 00:48:19,470 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 42 transitions.
[2020-07-18 00:48:19,470 INFO  L86        InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 42 transitions.
[2020-07-18 00:48:19,571 INFO  L119       InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 
[2020-07-18 00:48:19,583 INFO  L225             Difference]: With dead ends: 37
[2020-07-18 00:48:19,584 INFO  L226             Difference]: Without dead ends: 19
[2020-07-18 00:48:19,587 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-18 00:48:19,607 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2020-07-18 00:48:19,639 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2020-07-18 00:48:19,639 INFO  L214    AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa
[2020-07-18 00:48:19,640 INFO  L82        GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand 19 states.
[2020-07-18 00:48:19,641 INFO  L74              IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states.
[2020-07-18 00:48:19,641 INFO  L87              Difference]: Start difference. First operand 19 states. Second operand 19 states.
[2020-07-18 00:48:19,645 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-18 00:48:19,646 INFO  L93              Difference]: Finished difference Result 19 states and 20 transitions.
[2020-07-18 00:48:19,646 INFO  L276                IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions.
[2020-07-18 00:48:19,647 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-07-18 00:48:19,647 INFO  L83              IsIncluded]: Finished isIncluded. Language is included
[2020-07-18 00:48:19,647 INFO  L74              IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states.
[2020-07-18 00:48:19,648 INFO  L87              Difference]: Start difference. First operand 19 states. Second operand 19 states.
[2020-07-18 00:48:19,651 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-18 00:48:19,651 INFO  L93              Difference]: Finished difference Result 19 states and 20 transitions.
[2020-07-18 00:48:19,652 INFO  L276                IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions.
[2020-07-18 00:48:19,652 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-07-18 00:48:19,652 INFO  L83              IsIncluded]: Finished isIncluded. Language is included
[2020-07-18 00:48:19,653 INFO  L88        GeneralOperation]: Finished isEquivalent.
[2020-07-18 00:48:19,653 INFO  L221    AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa
[2020-07-18 00:48:19,654 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 19 states.
[2020-07-18 00:48:19,656 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions.
[2020-07-18 00:48:19,658 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13
[2020-07-18 00:48:19,658 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-18 00:48:19,658 INFO  L479      AbstractCegarLoop]: Abstraction has 19 states and 20 transitions.
[2020-07-18 00:48:19,658 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-07-18 00:48:19,659 INFO  L86        InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 19 states and 20 transitions.
[2020-07-18 00:48:19,693 INFO  L119       InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 
[2020-07-18 00:48:19,694 INFO  L276                IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions.
[2020-07-18 00:48:19,694 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-07-18 00:48:19,694 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-18 00:48:19,695 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-18 00:48:19,695 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-07-18 00:48:19,695 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-18 00:48:19,696 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-18 00:48:19,696 INFO  L82        PathProgramCache]: Analyzing trace with hash 18321438, now seen corresponding path program 1 times
[2020-07-18 00:48:19,696 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-18 00:48:19,696 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685356385]
[2020-07-18 00:48:19,697 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-07-18 00:48:19,730 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-18 00:48:19,748 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-18 00:48:19,768 INFO  L192   leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration
[2020-07-18 00:48:19,768 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-18 00:48:19,769 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-07-18 00:48:19,770 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-07-18 00:48:19,783 WARN  L170   areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation
[2020-07-18 00:48:19,784 WARN  L170   areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation
[2020-07-18 00:48:19,784 WARN  L170   areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation
[2020-07-18 00:48:19,784 WARN  L170   areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation
[2020-07-18 00:48:19,784 WARN  L170   areAnnotationChecker]: mainENTRY has no Hoare annotation
[2020-07-18 00:48:19,784 WARN  L170   areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation
[2020-07-18 00:48:19,784 WARN  L170   areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation
[2020-07-18 00:48:19,784 WARN  L170   areAnnotationChecker]: L-1 has no Hoare annotation
[2020-07-18 00:48:19,785 WARN  L170   areAnnotationChecker]: L-1 has no Hoare annotation
[2020-07-18 00:48:19,785 WARN  L170   areAnnotationChecker]: L4 has no Hoare annotation
[2020-07-18 00:48:19,785 WARN  L170   areAnnotationChecker]: L4 has no Hoare annotation
[2020-07-18 00:48:19,785 WARN  L170   areAnnotationChecker]: L17 has no Hoare annotation
[2020-07-18 00:48:19,785 WARN  L170   areAnnotationChecker]: L9 has no Hoare annotation
[2020-07-18 00:48:19,785 WARN  L170   areAnnotationChecker]: L9 has no Hoare annotation
[2020-07-18 00:48:19,786 WARN  L170   areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation
[2020-07-18 00:48:19,786 WARN  L170   areAnnotationChecker]: L4-1 has no Hoare annotation
[2020-07-18 00:48:19,786 WARN  L170   areAnnotationChecker]: L4-3 has no Hoare annotation
[2020-07-18 00:48:19,786 WARN  L170   areAnnotationChecker]: L17-1 has no Hoare annotation
[2020-07-18 00:48:19,786 WARN  L170   areAnnotationChecker]: L10 has no Hoare annotation
[2020-07-18 00:48:19,786 WARN  L170   areAnnotationChecker]: L10 has no Hoare annotation
[2020-07-18 00:48:19,787 WARN  L170   areAnnotationChecker]: L9-2 has no Hoare annotation
[2020-07-18 00:48:19,787 WARN  L170   areAnnotationChecker]: L19 has no Hoare annotation
[2020-07-18 00:48:19,787 WARN  L170   areAnnotationChecker]: L19 has no Hoare annotation
[2020-07-18 00:48:19,787 WARN  L170   areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation
[2020-07-18 00:48:19,787 WARN  L170   areAnnotationChecker]: L19-1 has no Hoare annotation
[2020-07-18 00:48:19,787 WARN  L170   areAnnotationChecker]: L22-2 has no Hoare annotation
[2020-07-18 00:48:19,787 WARN  L170   areAnnotationChecker]: L22-2 has no Hoare annotation
[2020-07-18 00:48:19,788 WARN  L170   areAnnotationChecker]: L22-2 has no Hoare annotation
[2020-07-18 00:48:19,788 WARN  L170   areAnnotationChecker]: mainFINAL has no Hoare annotation
[2020-07-18 00:48:19,788 WARN  L170   areAnnotationChecker]: L21-2 has no Hoare annotation
[2020-07-18 00:48:19,788 WARN  L170   areAnnotationChecker]: L21-2 has no Hoare annotation
[2020-07-18 00:48:19,788 WARN  L170   areAnnotationChecker]: L22 has no Hoare annotation
[2020-07-18 00:48:19,788 WARN  L170   areAnnotationChecker]: L22 has no Hoare annotation
[2020-07-18 00:48:19,788 WARN  L170   areAnnotationChecker]: mainEXIT has no Hoare annotation
[2020-07-18 00:48:19,789 WARN  L170   areAnnotationChecker]: L23 has no Hoare annotation
[2020-07-18 00:48:19,789 WARN  L170   areAnnotationChecker]: L25 has no Hoare annotation
[2020-07-18 00:48:19,789 WARN  L170   areAnnotationChecker]: L25-1 has no Hoare annotation
[2020-07-18 00:48:19,789 WARN  L170   areAnnotationChecker]: L25-2 has no Hoare annotation
[2020-07-18 00:48:19,789 INFO  L163   areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing.
[2020-07-18 00:48:19,792 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 12:48:19 BoogieIcfgContainer
[2020-07-18 00:48:19,793 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-18 00:48:19,796 INFO  L168              Benchmark]: Toolchain (without parser) took 1571.52 ms. Allocated memory was 134.7 MB in the beginning and 199.2 MB in the end (delta: 64.5 MB). Free memory was 100.0 MB in the beginning and 107.1 MB in the end (delta: -7.2 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB.
[2020-07-18 00:48:19,797 INFO  L168              Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
[2020-07-18 00:48:19,798 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 237.53 ms. Allocated memory is still 134.7 MB. Free memory was 99.5 MB in the beginning and 89.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB.
[2020-07-18 00:48:19,799 INFO  L168              Benchmark]: Boogie Preprocessor took 111.93 ms. Allocated memory was 134.7 MB in the beginning and 199.2 MB in the end (delta: 64.5 MB). Free memory was 89.8 MB in the beginning and 179.2 MB in the end (delta: -89.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB.
[2020-07-18 00:48:19,800 INFO  L168              Benchmark]: RCFGBuilder took 407.51 ms. Allocated memory is still 199.2 MB. Free memory was 178.2 MB in the beginning and 160.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB.
[2020-07-18 00:48:19,801 INFO  L168              Benchmark]: TraceAbstraction took 803.51 ms. Allocated memory is still 199.2 MB. Free memory was 159.6 MB in the beginning and 107.1 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB.
[2020-07-18 00:48:19,805 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - AssertionsEnabledResult: Assertions are enabled
    Assertions are enabled
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.24 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 237.53 ms. Allocated memory is still 134.7 MB. Free memory was 99.5 MB in the beginning and 89.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 111.93 ms. Allocated memory was 134.7 MB in the beginning and 199.2 MB in the end (delta: 64.5 MB). Free memory was 89.8 MB in the beginning and 179.2 MB in the end (delta: -89.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 407.51 ms. Allocated memory is still 199.2 MB. Free memory was 178.2 MB in the beginning and 160.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 803.51 ms. Allocated memory is still 199.2 MB. Free memory was 159.6 MB in the beginning and 107.1 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L16]              unsigned int x = 1;
[L17]              unsigned int y = __VERIFIER_nondet_uint();
[L19]  COND FALSE  !(!(y > 0))
[L21]  COND FALSE  !(x < y)
[L29]  CALL        __VERIFIER_assert(x != y)
[L9]   COND TRUE   !(cond)
[L10]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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...