/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/for_bounded_loop1.c


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


This is Ultimate 0.2.0-7d8eed3
[2020-11-06 22:44:56,366 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2020-11-06 22:44:56,433 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
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[2020-11-06 22:44:56,476 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-11-06 22:44:56,478 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-11-06 22:44:56,499 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-11-06 22:44:56,505 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
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[2020-11-06 22:44:56,540 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-11-06 22:44:56,582 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-11-06 22:44:56,583 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-11-06 22:44:56,587 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-11-06 22:44:56,588 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-11-06 22:44:56,588 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-11-06 22:44:56,588 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-11-06 22:44:56,588 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-11-06 22:44:56,589 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-11-06 22:44:56,589 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-11-06 22:44:56,589 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-11-06 22:44:56,590 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-11-06 22:44:56,591 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-11-06 22:44:56,591 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-11-06 22:44:56,591 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-11-06 22:44:56,591 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-11-06 22:44:56,591 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-11-06 22:44:56,591 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-11-06 22:44:56,592 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-11-06 22:44:56,592 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-11-06 22:44:56,592 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-11-06 22:44:56,592 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-11-06 22:44:56,592 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-11-06 22:44:56,593 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-11-06 22:44:56,593 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-11-06 22:44:56,593 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-11-06 22:44:56,593 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-11-06 22:44:56,593 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-11-06 22:44:56,594 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-11-06 22:44:56,594 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-11-06 22:44:56,594 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-11-06 22:44:57,058 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-11-06 22:44:57,090 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-11-06 22:44:57,093 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-11-06 22:44:57,095 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-11-06 22:44:57,096 INFO  L275        PluginConnector]: CDTParser initialized
[2020-11-06 22:44:57,097 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_bounded_loop1.c
[2020-11-06 22:44:57,184 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d141fc62f/53e2c92da0ee4b0c98a26f4e8479d5ec/FLAG8d537ed7e
[2020-11-06 22:44:57,923 INFO  L306              CDTParser]: Found 1 translation units.
[2020-11-06 22:44:57,923 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_bounded_loop1.c
[2020-11-06 22:44:57,932 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d141fc62f/53e2c92da0ee4b0c98a26f4e8479d5ec/FLAG8d537ed7e
[2020-11-06 22:44:58,264 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d141fc62f/53e2c92da0ee4b0c98a26f4e8479d5ec
[2020-11-06 22:44:58,268 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-11-06 22:44:58,275 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-11-06 22:44:58,277 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-11-06 22:44:58,277 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-11-06 22:44:58,281 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-11-06 22:44:58,282 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:58" (1/1) ...
[2020-11-06 22:44:58,286 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187ad513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58, skipping insertion in model container
[2020-11-06 22:44:58,286 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:58" (1/1) ...
[2020-11-06 22:44:58,295 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-11-06 22:44:58,310 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-11-06 22:44:58,479 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-11-06 22:44:58,488 INFO  L203         MainTranslator]: Completed pre-run
[2020-11-06 22:44:58,508 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-11-06 22:44:58,524 INFO  L208         MainTranslator]: Completed translation
[2020-11-06 22:44:58,525 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58 WrapperNode
[2020-11-06 22:44:58,525 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-11-06 22:44:58,527 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-11-06 22:44:58,527 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-11-06 22:44:58,527 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-11-06 22:44:58,542 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58" (1/1) ...
[2020-11-06 22:44:58,542 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58" (1/1) ...
[2020-11-06 22:44:58,551 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58" (1/1) ...
[2020-11-06 22:44:58,552 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58" (1/1) ...
[2020-11-06 22:44:58,558 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58" (1/1) ...
[2020-11-06 22:44:58,563 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58" (1/1) ...
[2020-11-06 22:44:58,565 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58" (1/1) ...
[2020-11-06 22:44:58,568 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-11-06 22:44:58,569 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-11-06 22:44:58,570 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-11-06 22:44:58,570 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-11-06 22:44:58,571 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58" (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
[2020-11-06 22:44:58,657 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-11-06 22:44:58,657 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-11-06 22:44:58,657 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-11-06 22:44:58,657 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-11-06 22:44:58,658 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-11-06 22:44:58,658 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-11-06 22:44:58,658 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-11-06 22:44:58,658 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-11-06 22:44:58,658 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-11-06 22:44:58,658 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-11-06 22:44:58,659 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-11-06 22:44:58,659 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-11-06 22:44:58,659 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-11-06 22:44:58,659 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-11-06 22:44:58,659 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-11-06 22:44:58,659 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-11-06 22:44:58,660 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-11-06 22:44:58,660 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-11-06 22:44:58,660 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-11-06 22:44:58,660 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-11-06 22:44:58,923 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-11-06 22:44:58,923 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-11-06 22:44:58,925 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:58 BoogieIcfgContainer
[2020-11-06 22:44:58,925 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-11-06 22:44:58,927 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-11-06 22:44:58,927 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-11-06 22:44:58,932 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-11-06 22:44:58,932 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:58" (1/3) ...
[2020-11-06 22:44:58,933 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50dd35cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:58, skipping insertion in model container
[2020-11-06 22:44:58,933 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:58" (2/3) ...
[2020-11-06 22:44:58,934 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50dd35cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:58, skipping insertion in model container
[2020-11-06 22:44:58,934 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:58" (3/3) ...
[2020-11-06 22:44:58,936 INFO  L111   eAbstractionObserver]: Analyzing ICFG for_bounded_loop1.c
[2020-11-06 22:44:58,963 INFO  L179   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-11-06 22:44:58,973 INFO  L191   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-11-06 22:44:59,023 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-11-06 22:44:59,092 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-11-06 22:44:59,092 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-11-06 22:44:59,093 INFO  L379      AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-11-06 22:44:59,093 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-11-06 22:44:59,096 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-11-06 22:44:59,097 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-11-06 22:44:59,097 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-11-06 22:44:59,097 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-11-06 22:44:59,145 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states.
[2020-11-06 22:44:59,162 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-11-06 22:44:59,162 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-06 22:44:59,163 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:44:59,164 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:44:59,183 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:44:59,184 INFO  L82        PathProgramCache]: Analyzing trace with hash -2024755940, now seen corresponding path program 1 times
[2020-11-06 22:44:59,208 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:44:59,212 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609455795]
[2020-11-06 22:44:59,212 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:44:59,458 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:44:59,656 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:44:59,671 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:44:59,706 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-06 22:44:59,707 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609455795]
[2020-11-06 22:44:59,708 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-06 22:44:59,709 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-11-06 22:44:59,710 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134879205]
[2020-11-06 22:44:59,716 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-11-06 22:44:59,717 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:44:59,743 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-11-06 22:44:59,744 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-11-06 22:44:59,747 INFO  L87              Difference]: Start difference. First operand 28 states. Second operand 3 states.
[2020-11-06 22:44:59,871 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:44:59,872 INFO  L93              Difference]: Finished difference Result 46 states and 61 transitions.
[2020-11-06 22:44:59,874 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-11-06 22:44:59,876 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 13
[2020-11-06 22:44:59,876 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:44:59,897 INFO  L225             Difference]: With dead ends: 46
[2020-11-06 22:44:59,897 INFO  L226             Difference]: Without dead ends: 21
[2020-11-06 22:44:59,901 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-11-06 22:44:59,922 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2020-11-06 22:44:59,950 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21.
[2020-11-06 22:44:59,951 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 21 states.
[2020-11-06 22:44:59,953 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions.
[2020-11-06 22:44:59,955 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 13
[2020-11-06 22:44:59,955 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:44:59,956 INFO  L481      AbstractCegarLoop]: Abstraction has 21 states and 23 transitions.
[2020-11-06 22:44:59,956 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-11-06 22:44:59,956 INFO  L276                IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions.
[2020-11-06 22:44:59,958 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-11-06 22:44:59,958 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-06 22:44:59,958 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:44:59,959 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-11-06 22:44:59,959 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:44:59,960 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:44:59,960 INFO  L82        PathProgramCache]: Analyzing trace with hash 1898032393, now seen corresponding path program 1 times
[2020-11-06 22:44:59,961 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:44:59,961 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333790814]
[2020-11-06 22:44:59,961 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:45:00,002 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:45:00,114 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:45:00,122 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:45:00,145 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-06 22:45:00,147 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333790814]
[2020-11-06 22:45:00,147 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-06 22:45:00,148 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-11-06 22:45:00,148 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950798049]
[2020-11-06 22:45:00,149 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-11-06 22:45:00,150 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:45:00,151 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-11-06 22:45:00,158 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-11-06 22:45:00,159 INFO  L87              Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 4 states.
[2020-11-06 22:45:00,322 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:45:00,322 INFO  L93              Difference]: Finished difference Result 35 states and 39 transitions.
[2020-11-06 22:45:00,323 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-11-06 22:45:00,323 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 13
[2020-11-06 22:45:00,324 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:45:00,325 INFO  L225             Difference]: With dead ends: 35
[2020-11-06 22:45:00,325 INFO  L226             Difference]: Without dead ends: 27
[2020-11-06 22:45:00,326 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-11-06 22:45:00,327 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2020-11-06 22:45:00,337 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22.
[2020-11-06 22:45:00,337 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2020-11-06 22:45:00,339 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions.
[2020-11-06 22:45:00,339 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13
[2020-11-06 22:45:00,339 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:45:00,340 INFO  L481      AbstractCegarLoop]: Abstraction has 22 states and 24 transitions.
[2020-11-06 22:45:00,340 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-11-06 22:45:00,340 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions.
[2020-11-06 22:45:00,341 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-11-06 22:45:00,341 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-06 22:45:00,341 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:45:00,341 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-11-06 22:45:00,342 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:45:00,343 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:45:00,343 INFO  L82        PathProgramCache]: Analyzing trace with hash 1951596611, now seen corresponding path program 1 times
[2020-11-06 22:45:00,343 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:45:00,343 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481525735]
[2020-11-06 22:45:00,344 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:45:00,371 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:45:00,476 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:45:00,480 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:45:00,488 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-06 22:45:00,488 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481525735]
[2020-11-06 22:45:00,489 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-06 22:45:00,489 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-11-06 22:45:00,489 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535406320]
[2020-11-06 22:45:00,490 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-11-06 22:45:00,490 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:45:00,491 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-11-06 22:45:00,491 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2020-11-06 22:45:00,492 INFO  L87              Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 7 states.
[2020-11-06 22:45:00,805 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:45:00,806 INFO  L93              Difference]: Finished difference Result 32 states and 34 transitions.
[2020-11-06 22:45:00,806 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-11-06 22:45:00,806 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 13
[2020-11-06 22:45:00,807 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:45:00,808 INFO  L225             Difference]: With dead ends: 32
[2020-11-06 22:45:00,808 INFO  L226             Difference]: Without dead ends: 29
[2020-11-06 22:45:00,809 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2020-11-06 22:45:00,809 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2020-11-06 22:45:00,817 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27.
[2020-11-06 22:45:00,818 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2020-11-06 22:45:00,819 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions.
[2020-11-06 22:45:00,819 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 13
[2020-11-06 22:45:00,819 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:45:00,820 INFO  L481      AbstractCegarLoop]: Abstraction has 27 states and 29 transitions.
[2020-11-06 22:45:00,820 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-11-06 22:45:00,820 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions.
[2020-11-06 22:45:00,821 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-11-06 22:45:00,821 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-06 22:45:00,821 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:45:00,821 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-11-06 22:45:00,822 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:45:00,822 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:45:00,823 INFO  L82        PathProgramCache]: Analyzing trace with hash -549680435, now seen corresponding path program 1 times
[2020-11-06 22:45:00,823 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:45:00,823 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195712829]
[2020-11-06 22:45:00,823 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:45:00,843 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:45:00,945 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-06 22:45:00,949 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:45:00,955 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-11-06 22:45:00,957 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-06 22:45:00,962 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-06 22:45:00,963 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195712829]
[2020-11-06 22:45:00,963 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-06 22:45:00,963 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-11-06 22:45:00,964 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8896462]
[2020-11-06 22:45:00,964 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-11-06 22:45:00,964 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-06 22:45:00,965 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-11-06 22:45:00,965 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-11-06 22:45:00,966 INFO  L87              Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states.
[2020-11-06 22:45:01,286 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-06 22:45:01,287 INFO  L93              Difference]: Finished difference Result 40 states and 43 transitions.
[2020-11-06 22:45:01,287 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-11-06 22:45:01,287 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 20
[2020-11-06 22:45:01,288 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-06 22:45:01,289 INFO  L225             Difference]: With dead ends: 40
[2020-11-06 22:45:01,289 INFO  L226             Difference]: Without dead ends: 37
[2020-11-06 22:45:01,290 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182
[2020-11-06 22:45:01,290 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2020-11-06 22:45:01,297 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34.
[2020-11-06 22:45:01,297 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2020-11-06 22:45:01,299 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions.
[2020-11-06 22:45:01,299 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 20
[2020-11-06 22:45:01,299 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-06 22:45:01,299 INFO  L481      AbstractCegarLoop]: Abstraction has 34 states and 36 transitions.
[2020-11-06 22:45:01,299 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-11-06 22:45:01,300 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions.
[2020-11-06 22:45:01,301 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-11-06 22:45:01,301 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-06 22:45:01,301 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-06 22:45:01,301 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-11-06 22:45:01,301 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-06 22:45:01,302 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-06 22:45:01,302 INFO  L82        PathProgramCache]: Analyzing trace with hash -1572252782, now seen corresponding path program 1 times
[2020-11-06 22:45:01,302 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-06 22:45:01,303 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129889950]
[2020-11-06 22:45:01,303 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-06 22:45:01,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-11-06 22:45:01,320 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-11-06 22:45:01,336 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-11-06 22:45:01,336 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-11-06 22:45:01,384 INFO  L173   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2020-11-06 22:45:01,385 INFO  L523         BasicCegarLoop]: Counterexample might be feasible
[2020-11-06 22:45:01,385 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-11-06 22:45:01,439 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:45:01 BoogieIcfgContainer
[2020-11-06 22:45:01,440 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-11-06 22:45:01,442 INFO  L168              Benchmark]: Toolchain (without parser) took 3171.44 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 126.3 MB in the beginning and 84.3 MB in the end (delta: 42.0 MB). Peak memory consumption was 83.4 MB. Max. memory is 8.0 GB.
[2020-11-06 22:45:01,443 INFO  L168              Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-11-06 22:45:01,444 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 249.17 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2020-11-06 22:45:01,445 INFO  L168              Benchmark]: Boogie Preprocessor took 41.59 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2020-11-06 22:45:01,446 INFO  L168              Benchmark]: RCFGBuilder took 356.10 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 100.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
[2020-11-06 22:45:01,447 INFO  L168              Benchmark]: TraceAbstraction took 2512.46 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 100.4 MB in the beginning and 84.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 8.0 GB.
[2020-11-06 22:45:01,452 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB.
 * CACSL2BoogieTranslator took 249.17 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
 * Boogie Preprocessor took 41.59 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
 * RCFGBuilder took 356.10 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 100.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
 * TraceAbstraction took 2512.46 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 100.4 MB in the beginning and 84.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 8.0 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L19]              int i=0, x=0, y=0;
[L20]              int n=__VERIFIER_nondet_int();
[L21]  COND FALSE  !(!(n>0))
[L22]              i=0
       VAL         [i=0, n=1, x=0, y=0]
[L22]  COND TRUE   i<n
[L24]              x = x-y
       VAL         [i=0, n=1, x=0, y=0]
[L25]  CALL        __VERIFIER_assert(x==0)
       VAL         [\old(cond)=1]
[L10]  COND FALSE  !(!(cond))
       VAL         [\old(cond)=1, cond=1]
[L25]  RET         __VERIFIER_assert(x==0)
       VAL         [i=0, n=1, x=0, y=0]
[L26]              y = __VERIFIER_nondet_int()
[L27]  COND FALSE  !(!(y!=0))
[L28]              x = x+y
       VAL         [i=0, n=1, x=1, y=1]
[L29]  CALL        __VERIFIER_assert(x!=0)
       VAL         [\old(cond)=1]
[L10]  COND FALSE  !(!(cond))
       VAL         [\old(cond)=1, cond=1]
[L29]  RET         __VERIFIER_assert(x!=0)
       VAL         [i=0, n=1, x=1, y=1]
[L22]              i++
       VAL         [i=1, n=1, x=1, y=1]
[L22]  COND FALSE  !(i<n)
       VAL         [i=1, n=1, x=1, y=1]
[L31]  CALL        __VERIFIER_assert(x==0)
       VAL         [\old(cond)=0]
[L10]  COND TRUE   !(cond)
       VAL         [\old(cond)=0, cond=0]
[L11]  CALL        reach_error()
[L3]               __assert_fail("0", "for_bounded_loop1.c", 3, "reach_error")

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 84 SDslu, 83 SDs, 0 SdLazy, 189 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=4, 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, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 3435 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...