/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/condmf.c
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This is Ultimate 0.1.25-72570d3
[2020-08-22 22:59:44,894 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-08-22 22:59:44,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-22 22:59:44,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-22 22:59:44,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-22 22:59:44,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-22 22:59:44,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-22 22:59:44,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-22 22:59:44,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-22 22:59:44,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-22 22:59:44,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
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[2020-08-22 22:59:44,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
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[2020-08-22 22:59:44,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-22 22:59:44,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-22 22:59:44,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-22 22:59:44,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-22 22:59:44,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-22 22:59:44,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-22 22:59:44,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-22 22:59:44,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-08-22 22:59:44,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-22 22:59:44,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2020-08-22 22:59:44,962 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-08-22 22:59:44,972 INFO L113 SettingsManager]: Loading preferences was successful
[2020-08-22 22:59:44,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-22 22:59:44,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-22 22:59:44,975 INFO L138 SettingsManager]: * sizeof long=4
[2020-08-22 22:59:44,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-08-22 22:59:44,975 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-08-22 22:59:44,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-08-22 22:59:44,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-08-22 22:59:44,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-22 22:59:44,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-08-22 22:59:44,976 INFO L138 SettingsManager]: * sizeof long double=12
[2020-08-22 22:59:44,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-08-22 22:59:44,976 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-08-22 22:59:44,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-08-22 22:59:44,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-22 22:59:44,977 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2020-08-22 22:59:44,977 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-08-22 22:59:44,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-08-22 22:59:44,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-22 22:59:44,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-22 22:59:44,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-08-22 22:59:44,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-22 22:59:44,979 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true
[2020-08-22 22:59:45,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-22 22:59:45,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-22 22:59:45,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-22 22:59:45,320 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-08-22 22:59:45,320 INFO L275 PluginConnector]: CDTParser initialized
[2020-08-22 22:59:45,321 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condmf.c
[2020-08-22 22:59:45,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d4218f74/ab7beca48ce04c1ab7e600150b1a5120/FLAG93567602a
[2020-08-22 22:59:45,919 INFO L306 CDTParser]: Found 1 translation units.
[2020-08-22 22:59:45,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condmf.c
[2020-08-22 22:59:45,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d4218f74/ab7beca48ce04c1ab7e600150b1a5120/FLAG93567602a
[2020-08-22 22:59:46,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d4218f74/ab7beca48ce04c1ab7e600150b1a5120
[2020-08-22 22:59:46,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-22 22:59:46,282 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-22 22:59:46,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-22 22:59:46,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-22 22:59:46,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-22 22:59:46,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:59:46" (1/1) ...
[2020-08-22 22:59:46,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3c6d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:46, skipping insertion in model container
[2020-08-22 22:59:46,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:59:46" (1/1) ...
[2020-08-22 22:59:46,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-08-22 22:59:46,328 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-08-22 22:59:46,518 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-08-22 22:59:46,532 INFO L203 MainTranslator]: Completed pre-run
[2020-08-22 22:59:46,569 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-08-22 22:59:46,659 INFO L208 MainTranslator]: Completed translation
[2020-08-22 22:59:46,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:46 WrapperNode
[2020-08-22 22:59:46,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-22 22:59:46,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-22 22:59:46,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-22 22:59:46,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-08-22 22:59:46,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:46" (1/1) ...
[2020-08-22 22:59:46,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:46" (1/1) ...
[2020-08-22 22:59:46,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:46" (1/1) ...
[2020-08-22 22:59:46,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:46" (1/1) ...
[2020-08-22 22:59:46,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:46" (1/1) ...
[2020-08-22 22:59:46,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:46" (1/1) ...
[2020-08-22 22:59:46,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:46" (1/1) ...
[2020-08-22 22:59:46,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-22 22:59:46,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-22 22:59:46,700 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-08-22 22:59:46,700 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-08-22 22:59:46,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:46" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-22 22:59:46,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-22 22:59:46,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-22 22:59:46,770 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-08-22 22:59:46,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-08-22 22:59:46,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-08-22 22:59:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-22 22:59:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-08-22 22:59:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-08-22 22:59:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-08-22 22:59:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-22 22:59:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-08-22 22:59:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-08-22 22:59:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-22 22:59:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-08-22 22:59:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-08-22 22:59:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-22 22:59:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-22 22:59:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-22 22:59:47,086 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-22 22:59:47,087 INFO L295 CfgBuilder]: Removed 3 assume(true) statements.
[2020-08-22 22:59:47,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:59:47 BoogieIcfgContainer
[2020-08-22 22:59:47,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-22 22:59:47,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-22 22:59:47,093 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-08-22 22:59:47,097 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-08-22 22:59:47,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:59:46" (1/3) ...
[2020-08-22 22:59:47,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c18d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:59:47, skipping insertion in model container
[2020-08-22 22:59:47,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:59:46" (2/3) ...
[2020-08-22 22:59:47,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c18d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:59:47, skipping insertion in model container
[2020-08-22 22:59:47,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:59:47" (3/3) ...
[2020-08-22 22:59:47,101 INFO L109 eAbstractionObserver]: Analyzing ICFG condmf.c
[2020-08-22 22:59:47,113 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-22 22:59:47,125 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-22 22:59:47,140 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-22 22:59:47,161 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-08-22 22:59:47,162 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-08-22 22:59:47,162 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-22 22:59:47,162 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-22 22:59:47,162 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-22 22:59:47,163 INFO L380 AbstractCegarLoop]: Difference is false
[2020-08-22 22:59:47,163 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-22 22:59:47,163 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-22 22:59:47,180 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states.
[2020-08-22 22:59:47,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2020-08-22 22:59:47,192 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-22 22:59:47,193 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]
[2020-08-22 22:59:47,193 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 22:59:47,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 22:59:47,199 INFO L82 PathProgramCache]: Analyzing trace with hash 246632013, now seen corresponding path program 1 times
[2020-08-22 22:59:47,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 22:59:47,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497978380]
[2020-08-22 22:59:47,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 22:59:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 22:59:47,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 22:59:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 22:59:47,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-22 22:59:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 22:59:47,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-22 22:59:47,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497978380]
[2020-08-22 22:59:47,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 22:59:47,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-22 22:59:47,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685942531]
[2020-08-22 22:59:47,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-22 22:59:47,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 22:59:47,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-22 22:59:47,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-22 22:59:47,483 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states.
[2020-08-22 22:59:47,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 22:59:47,718 INFO L93 Difference]: Finished difference Result 101 states and 118 transitions.
[2020-08-22 22:59:47,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-08-22 22:59:47,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31
[2020-08-22 22:59:47,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 22:59:47,731 INFO L225 Difference]: With dead ends: 101
[2020-08-22 22:59:47,732 INFO L226 Difference]: Without dead ends: 52
[2020-08-22 22:59:47,737 INFO L675 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
[2020-08-22 22:59:47,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2020-08-22 22:59:47,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52.
[2020-08-22 22:59:47,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states.
[2020-08-22 22:59:47,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions.
[2020-08-22 22:59:47,790 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 31
[2020-08-22 22:59:47,791 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-22 22:59:47,791 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions.
[2020-08-22 22:59:47,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-22 22:59:47,792 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions.
[2020-08-22 22:59:47,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2020-08-22 22:59:47,793 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-22 22:59:47,794 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]
[2020-08-22 22:59:47,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-22 22:59:47,794 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 22:59:47,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 22:59:47,795 INFO L82 PathProgramCache]: Analyzing trace with hash 2015253558, now seen corresponding path program 1 times
[2020-08-22 22:59:47,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 22:59:47,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184857983]
[2020-08-22 22:59:47,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 22:59:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 22:59:47,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 22:59:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 22:59:47,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-22 22:59:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 22:59:47,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-22 22:59:47,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184857983]
[2020-08-22 22:59:47,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 22:59:47,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-08-22 22:59:47,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5619183]
[2020-08-22 22:59:47,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-08-22 22:59:47,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 22:59:47,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-08-22 22:59:47,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-08-22 22:59:47,982 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 5 states.
[2020-08-22 22:59:48,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 22:59:48,226 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions.
[2020-08-22 22:59:48,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-08-22 22:59:48,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31
[2020-08-22 22:59:48,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 22:59:48,232 INFO L225 Difference]: With dead ends: 98
[2020-08-22 22:59:48,232 INFO L226 Difference]: Without dead ends: 72
[2020-08-22 22:59:48,234 INFO L675 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
[2020-08-22 22:59:48,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2020-08-22 22:59:48,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54.
[2020-08-22 22:59:48,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states.
[2020-08-22 22:59:48,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions.
[2020-08-22 22:59:48,258 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 31
[2020-08-22 22:59:48,258 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-22 22:59:48,259 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions.
[2020-08-22 22:59:48,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-08-22 22:59:48,259 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions.
[2020-08-22 22:59:48,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2020-08-22 22:59:48,261 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-22 22:59:48,261 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]
[2020-08-22 22:59:48,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-22 22:59:48,262 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 22:59:48,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 22:59:48,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1554786686, now seen corresponding path program 1 times
[2020-08-22 22:59:48,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 22:59:48,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320870637]
[2020-08-22 22:59:48,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 22:59:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-22 22:59:48,348 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-08-22 22:59:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-22 22:59:48,419 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-08-22 22:59:48,449 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-22 22:59:48,450 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-08-22 22:59:48,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-22 22:59:48,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:59:48 BoogieIcfgContainer
[2020-08-22 22:59:48,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-22 22:59:48,495 INFO L168 Benchmark]: Toolchain (without parser) took 2212.69 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 103.7 MB in the beginning and 198.5 MB in the end (delta: -94.9 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB.
[2020-08-22 22:59:48,496 INFO L168 Benchmark]: CDTParser took 1.05 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB.
[2020-08-22 22:59:48,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.59 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 103.4 MB in the beginning and 180.9 MB in the end (delta: -77.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB.
[2020-08-22 22:59:48,498 INFO L168 Benchmark]: Boogie Preprocessor took 38.90 ms. Allocated memory is still 201.9 MB. Free memory was 180.9 MB in the beginning and 178.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB.
[2020-08-22 22:59:48,499 INFO L168 Benchmark]: RCFGBuilder took 392.44 ms. Allocated memory is still 201.9 MB. Free memory was 178.5 MB in the beginning and 159.7 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB.
[2020-08-22 22:59:48,500 INFO L168 Benchmark]: TraceAbstraction took 1399.51 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 159.7 MB in the beginning and 198.5 MB in the end (delta: -38.8 MB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-08-22 22:59:48,505 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 1.05 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 376.59 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 103.4 MB in the beginning and 180.9 MB in the end (delta: -77.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 38.90 ms. Allocated memory is still 201.9 MB. Free memory was 180.9 MB in the beginning and 178.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 392.44 ms. Allocated memory is still 201.9 MB. Free memory was 178.5 MB in the beginning and 159.7 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1399.51 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 159.7 MB in the beginning and 198.5 MB in the end (delta: -38.8 MB). There was no memory consumed. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L17] int N;
VAL [\old(N)=6, N=0]
[L21] N = __VERIFIER_nondet_int()
VAL [\old(N)=0, __VERIFIER_nondet_int()=1, N=1]
[L22] COND FALSE !(N <= 0)
VAL [\old(N)=0, N=1]
[L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int))
VAL [\old(cond)=1, \old(N)=0, N=1]
[L11] COND FALSE !(!cond)
VAL [\old(cond)=1, \old(N)=0, cond=1, N=1]
[L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int))
VAL [\old(N)=0, N=1]
[L25] int i;
VAL [\old(N)=0, N=1]
[L26] int *a = malloc(sizeof(int)*N);
VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1]
[L28] i = 0
VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1]
[L28] COND TRUE i < N
VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1]
[L30] a[i] = 0
VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1]
[L28] i++
VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1]
[L28] COND FALSE !(i < N)
VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1]
[L33] i = 0
VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1]
[L33] COND TRUE i < N
VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1]
[L35] COND TRUE N%2 == 1
VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1]
[L37] EXPR a[i]
VAL [\old(N)=0, a={-1:0}, a[i]=0, i=0, malloc(sizeof(int)*N)={-1:0}, N=1]
[L37] a[i] = a[i] + 2
VAL [\old(N)=0, a={-1:0}, a[i]=0, i=0, malloc(sizeof(int)*N)={-1:0}, N=1]
[L33] i++
VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1]
[L33] COND FALSE !(i < N)
VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1]
[L45] i = 0
VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1]
[L45] COND TRUE i < N
VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1]
[L47] EXPR a[i]
VAL [\old(N)=0, a={-1:0}, a[i]=2, i=0, malloc(sizeof(int)*N)={-1:0}, N=1]
[L47] CALL __VERIFIER_assert(a[i] % 2 == N % 2)
VAL [\old(cond)=0, \old(N)=0, N=1]
[L13] COND TRUE !(cond)
VAL [\old(cond)=0, \old(N)=0, cond=0, N=1]
[L13] __VERIFIER_error()
VAL [\old(cond)=0, \old(N)=0, cond=0, N=1]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 94 SDslu, 23 SDs, 0 SdLazy, 141 SolverSat, 12 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=59occurred 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, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 3000 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...