/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ms4f.c


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


This is Ultimate 0.2.0-b8ad66e
[2020-10-23 21:45:07,786 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2020-10-23 21:45:07,885 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-23 21:45:07,902 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-23 21:45:07,909 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
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[2020-10-23 21:45:07,940 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-23 21:45:07,941 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-10-23 21:45:07,963 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-23 21:45:07,963 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-23 21:45:07,968 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-23 21:45:07,968 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-23 21:45:07,968 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-23 21:45:07,968 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-23 21:45:07,969 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-23 21:45:07,969 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-23 21:45:07,969 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-23 21:45:07,969 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-23 21:45:07,970 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-23 21:45:07,970 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-23 21:45:07,971 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-23 21:45:07,971 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-23 21:45:07,971 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-23 21:45:07,971 INFO  L138        SettingsManager]:  * Size of a code block=SingleStatement
[2020-10-23 21:45:07,972 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-23 21:45:07,972 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-23 21:45:07,972 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-23 21:45:07,972 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-23 21:45:07,972 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-10-23 21:45:07,973 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-23 21:45:07,973 INFO  L138        SettingsManager]:  * Use separate solver for trace checks=false
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-10-23 21:45:08,381 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-23 21:45:08,420 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-23 21:45:08,423 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-23 21:45:08,425 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-23 21:45:08,425 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-23 21:45:08,426 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms4f.c
[2020-10-23 21:45:08,516 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de022c145/650ec9940f1044a2ac6c5aaa490de22e/FLAGee4173393
[2020-10-23 21:45:09,179 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-23 21:45:09,180 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms4f.c
[2020-10-23 21:45:09,189 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de022c145/650ec9940f1044a2ac6c5aaa490de22e/FLAGee4173393
[2020-10-23 21:45:09,535 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de022c145/650ec9940f1044a2ac6c5aaa490de22e
[2020-10-23 21:45:09,539 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-23 21:45:09,547 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-23 21:45:09,554 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-23 21:45:09,554 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-23 21:45:09,558 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-23 21:45:09,559 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:09" (1/1) ...
[2020-10-23 21:45:09,563 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d2feda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:09, skipping insertion in model container
[2020-10-23 21:45:09,564 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:09" (1/1) ...
[2020-10-23 21:45:09,574 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-23 21:45:09,592 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-23 21:45:09,771 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-23 21:45:09,781 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-23 21:45:09,805 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-23 21:45:09,824 INFO  L208         MainTranslator]: Completed translation
[2020-10-23 21:45:09,824 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:09 WrapperNode
[2020-10-23 21:45:09,824 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-23 21:45:09,826 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-23 21:45:09,826 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-23 21:45:09,826 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-23 21:45:09,840 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:09" (1/1) ...
[2020-10-23 21:45:09,840 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:09" (1/1) ...
[2020-10-23 21:45:09,849 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:09" (1/1) ...
[2020-10-23 21:45:09,850 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:09" (1/1) ...
[2020-10-23 21:45:09,859 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:09" (1/1) ...
[2020-10-23 21:45:09,864 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:09" (1/1) ...
[2020-10-23 21:45:09,866 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:09" (1/1) ...
[2020-10-23 21:45:09,869 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-23 21:45:09,870 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-23 21:45:09,870 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-23 21:45:09,870 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-23 21:45:09,871 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:09" (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
[2020-10-23 21:45:09,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-23 21:45:09,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-23 21:45:09,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-23 21:45:09,955 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-10-23 21:45:09,955 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-10-23 21:45:09,955 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-23 21:45:09,955 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-23 21:45:09,955 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-23 21:45:09,955 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-23 21:45:09,956 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-23 21:45:09,956 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-10-23 21:45:09,956 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-10-23 21:45:09,956 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-23 21:45:09,956 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-10-23 21:45:09,956 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-23 21:45:09,956 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-10-23 21:45:09,957 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-23 21:45:09,957 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-23 21:45:09,957 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-23 21:45:09,957 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-23 21:45:09,957 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-23 21:45:09,957 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-23 21:45:10,621 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-23 21:45:10,621 INFO  L298             CfgBuilder]: Removed 2 assume(true) statements.
[2020-10-23 21:45:10,624 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:10 BoogieIcfgContainer
[2020-10-23 21:45:10,624 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-23 21:45:10,626 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-23 21:45:10,626 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-23 21:45:10,633 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-23 21:45:10,633 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:45:09" (1/3) ...
[2020-10-23 21:45:10,635 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67da935a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:10, skipping insertion in model container
[2020-10-23 21:45:10,635 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:09" (2/3) ...
[2020-10-23 21:45:10,636 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67da935a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:10, skipping insertion in model container
[2020-10-23 21:45:10,636 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:10" (3/3) ...
[2020-10-23 21:45:10,638 INFO  L111   eAbstractionObserver]: Analyzing ICFG ms4f.c
[2020-10-23 21:45:10,655 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-23 21:45:10,662 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-23 21:45:10,680 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-23 21:45:10,723 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-23 21:45:10,723 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-23 21:45:10,723 INFO  L379      AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2020-10-23 21:45:10,724 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-23 21:45:10,724 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-23 21:45:10,724 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-23 21:45:10,724 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-23 21:45:10,724 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-23 21:45:10,753 INFO  L276                IsEmpty]: Start isEmpty. Operand 73 states.
[2020-10-23 21:45:10,770 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2020-10-23 21:45:10,770 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-23 21:45:10,771 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 21:45:10,772 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 21:45:10,782 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 21:45:10,782 INFO  L82        PathProgramCache]: Analyzing trace with hash -1978426860, now seen corresponding path program 1 times
[2020-10-23 21:45:10,795 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-23 21:45:10,795 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487429348]
[2020-10-23 21:45:10,796 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 21:45:10,933 INFO  L321   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-10-23 21:45:11,082 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 21:45:11,235 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 21:45:11,251 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 21:45:11,287 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2020-10-23 21:45:11,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 21:45:11,307 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 21:45:11,309 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487429348]
[2020-10-23 21:45:11,312 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 21:45:11,312 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-23 21:45:11,313 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773707827]
[2020-10-23 21:45:11,320 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-10-23 21:45:11,320 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-23 21:45:11,336 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-10-23 21:45:11,338 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-10-23 21:45:11,341 INFO  L87              Difference]: Start difference. First operand 73 states. Second operand 3 states.
[2020-10-23 21:45:11,600 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 21:45:11,600 INFO  L93              Difference]: Finished difference Result 114 states and 128 transitions.
[2020-10-23 21:45:11,601 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-10-23 21:45:11,603 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 43
[2020-10-23 21:45:11,603 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 21:45:11,612 INFO  L225             Difference]: With dead ends: 114
[2020-10-23 21:45:11,612 INFO  L226             Difference]: Without dead ends: 58
[2020-10-23 21:45:11,616 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-10-23 21:45:11,635 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2020-10-23 21:45:11,664 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58.
[2020-10-23 21:45:11,665 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 58 states.
[2020-10-23 21:45:11,667 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions.
[2020-10-23 21:45:11,669 INFO  L78                 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 43
[2020-10-23 21:45:11,670 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-23 21:45:11,670 INFO  L481      AbstractCegarLoop]: Abstraction has 58 states and 60 transitions.
[2020-10-23 21:45:11,670 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-10-23 21:45:11,670 INFO  L276                IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions.
[2020-10-23 21:45:11,672 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2020-10-23 21:45:11,672 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-23 21:45:11,672 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 21:45:11,673 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-23 21:45:11,673 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 21:45:11,674 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 21:45:11,674 INFO  L82        PathProgramCache]: Analyzing trace with hash 1403761419, now seen corresponding path program 1 times
[2020-10-23 21:45:11,674 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-23 21:45:11,675 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627858818]
[2020-10-23 21:45:11,675 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 21:45:11,683 INFO  L321   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-10-23 21:45:11,730 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 21:45:11,829 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 21:45:11,834 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 21:45:11,844 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2020-10-23 21:45:11,846 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 21:45:11,852 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 21:45:11,853 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627858818]
[2020-10-23 21:45:11,853 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 21:45:11,853 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-10-23 21:45:11,854 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239369304]
[2020-10-23 21:45:11,855 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-23 21:45:11,855 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-23 21:45:11,856 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-23 21:45:11,856 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-23 21:45:11,856 INFO  L87              Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states.
[2020-10-23 21:45:12,077 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 21:45:12,078 INFO  L93              Difference]: Finished difference Result 85 states and 91 transitions.
[2020-10-23 21:45:12,078 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-10-23 21:45:12,079 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 43
[2020-10-23 21:45:12,079 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 21:45:12,081 INFO  L225             Difference]: With dead ends: 85
[2020-10-23 21:45:12,081 INFO  L226             Difference]: Without dead ends: 66
[2020-10-23 21:45:12,083 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2020-10-23 21:45:12,084 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2020-10-23 21:45:12,096 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61.
[2020-10-23 21:45:12,096 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 61 states.
[2020-10-23 21:45:12,098 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions.
[2020-10-23 21:45:12,099 INFO  L78                 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 43
[2020-10-23 21:45:12,099 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-23 21:45:12,099 INFO  L481      AbstractCegarLoop]: Abstraction has 61 states and 63 transitions.
[2020-10-23 21:45:12,099 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-23 21:45:12,100 INFO  L276                IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions.
[2020-10-23 21:45:12,101 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2020-10-23 21:45:12,102 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-23 21:45:12,102 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 21:45:12,102 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-23 21:45:12,102 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 21:45:12,103 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 21:45:12,103 INFO  L82        PathProgramCache]: Analyzing trace with hash -1589882434, now seen corresponding path program 1 times
[2020-10-23 21:45:12,104 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-23 21:45:12,104 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471218315]
[2020-10-23 21:45:12,104 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 21:45:12,285 INFO  L120            Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found.
[2020-10-23 21:45:12,288 INFO  L321   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-10-23 21:45:12,351 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-23 21:45:12,351 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-23 21:45:12,424 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-23 21:45:12,425 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-23 21:45:12,486 INFO  L173   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-10-23 21:45:12,486 INFO  L523         BasicCegarLoop]: Counterexample might be feasible
[2020-10-23 21:45:12,487 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-23 21:45:12,507 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:45:12 BoogieIcfgContainer
[2020-10-23 21:45:12,507 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-23 21:45:12,510 INFO  L168              Benchmark]: Toolchain (without parser) took 2967.17 ms. Allocated memory was 154.1 MB in the beginning and 195.0 MB in the end (delta: 40.9 MB). Free memory was 131.0 MB in the beginning and 167.1 MB in the end (delta: -36.1 MB). Peak memory consumption was 5.7 MB. Max. memory is 8.0 GB.
[2020-10-23 21:45:12,511 INFO  L168              Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 154.1 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-23 21:45:12,512 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 271.35 ms. Allocated memory is still 154.1 MB. Free memory was 130.2 MB in the beginning and 120.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2020-10-23 21:45:12,513 INFO  L168              Benchmark]: Boogie Preprocessor took 43.34 ms. Allocated memory is still 154.1 MB. Free memory was 120.5 MB in the beginning and 118.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2020-10-23 21:45:12,514 INFO  L168              Benchmark]: RCFGBuilder took 754.36 ms. Allocated memory is still 154.1 MB. Free memory was 118.9 MB in the beginning and 99.8 MB in the end (delta: 19.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB.
[2020-10-23 21:45:12,515 INFO  L168              Benchmark]: TraceAbstraction took 1881.01 ms. Allocated memory was 154.1 MB in the beginning and 195.0 MB in the end (delta: 40.9 MB). Free memory was 99.2 MB in the beginning and 167.1 MB in the end (delta: -67.9 MB). There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-23 21:45:12,519 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.22 ms. Allocated memory is still 154.1 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB.
 * CACSL2BoogieTranslator took 271.35 ms. Allocated memory is still 154.1 MB. Free memory was 130.2 MB in the beginning and 120.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
 * Boogie Preprocessor took 43.34 ms. Allocated memory is still 154.1 MB. Free memory was 120.5 MB in the beginning and 118.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
 * RCFGBuilder took 754.36 ms. Allocated memory is still 154.1 MB. Free memory was 118.9 MB in the beginning and 99.8 MB in the end (delta: 19.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB.
 * TraceAbstraction took 1881.01 ms. Allocated memory was 154.1 MB in the beginning and 195.0 MB in the end (delta: 40.9 MB). Free memory was 99.2 MB in the beginning and 167.1 MB in the end (delta: -67.9 MB). There was no memory consumed. Max. memory is 8.0 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: 
[L19]              int N;
[L23]              N = __VERIFIER_nondet_int()
[L24]  COND FALSE  !(N <= 0)
[L25]  CALL        assume_abort_if_not(N <= 2147483647/sizeof(int))
[L13]  COND FALSE  !(!cond)
[L25]  RET         assume_abort_if_not(N <= 2147483647/sizeof(int))
[L27]              int i;
[L28]              long long sum[1];
[L29]              int *a = malloc(sizeof(int)*N);
[L31]              i=0
[L31]  COND TRUE   i<N
[L33]              a[i] = i%4
[L31]              i++
[L31]  COND FALSE  !(i<N)
[L36]              i=0
[L36]  COND TRUE   i<N
[L38]  COND TRUE   i==0
[L39]              sum[0] = 0
[L36]              i++
[L36]  COND FALSE  !(i<N)
[L44]  EXPR        sum[0]
[L44]  CALL        __VERIFIER_assert(sum[0] > 3*N)
[L15]  COND TRUE   !(cond)
[L15]  CALL        reach_error()
[L10]              __assert_fail("0", "ms4f.c", 10, "reach_error")

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 62 SDslu, 37 SDs, 0 SdLazy, 135 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 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...