/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/indp4f.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-72570d3
[2020-08-22 19:44:38,520 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-08-22 19:44:38,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-22 19:44:38,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-22 19:44:38,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-22 19:44:38,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-22 19:44:38,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-08-22 19:44:38,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-08-22 19:44:38,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
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[2020-08-22 19:44:38,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-22 19:44:38,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-22 19:44:38,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-22 19:44:38,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-22 19:44:38,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-22 19:44:38,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-22 19:44:38,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-08-22 19:44:38,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2020-08-22 19:44:38,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-22 19:44:38,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-22 19:44:38,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
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[2020-08-22 19:44:38,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-08-22 19:44:38,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2020-08-22 19:44:38,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-08-22 19:44:38,592 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 19:44:38,601 INFO L113 SettingsManager]: Loading preferences was successful
[2020-08-22 19:44:38,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-22 19:44:38,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-22 19:44:38,604 INFO L138 SettingsManager]: * sizeof long=4
[2020-08-22 19:44:38,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-08-22 19:44:38,604 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-08-22 19:44:38,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-08-22 19:44:38,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-08-22 19:44:38,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-22 19:44:38,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-08-22 19:44:38,605 INFO L138 SettingsManager]: * sizeof long double=12
[2020-08-22 19:44:38,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-08-22 19:44:38,605 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-08-22 19:44:38,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-08-22 19:44:38,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-22 19:44:38,606 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2020-08-22 19:44:38,606 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-08-22 19:44:38,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-08-22 19:44:38,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-22 19:44:38,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-22 19:44:38,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-08-22 19:44:38,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-22 19:44:38,607 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
[2020-08-22 19:44:38,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-22 19:44:38,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-22 19:44:38,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-22 19:44:38,958 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-08-22 19:44:38,959 INFO L275 PluginConnector]: CDTParser initialized
[2020-08-22 19:44:38,960 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp4f.c
[2020-08-22 19:44:39,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35bb51c22/458dc00b0b2f478986c2ce8031dee083/FLAG245e0d777
[2020-08-22 19:44:39,514 INFO L306 CDTParser]: Found 1 translation units.
[2020-08-22 19:44:39,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp4f.c
[2020-08-22 19:44:39,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35bb51c22/458dc00b0b2f478986c2ce8031dee083/FLAG245e0d777
[2020-08-22 19:44:39,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35bb51c22/458dc00b0b2f478986c2ce8031dee083
[2020-08-22 19:44:39,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-22 19:44:39,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-22 19:44:39,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-22 19:44:39,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-22 19:44:39,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-22 19:44:39,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:44:39" (1/1) ...
[2020-08-22 19:44:39,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a706625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:39, skipping insertion in model container
[2020-08-22 19:44:39,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:44:39" (1/1) ...
[2020-08-22 19:44:39,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-08-22 19:44:39,925 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-08-22 19:44:40,121 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-08-22 19:44:40,134 INFO L203 MainTranslator]: Completed pre-run
[2020-08-22 19:44:40,157 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-08-22 19:44:40,173 INFO L208 MainTranslator]: Completed translation
[2020-08-22 19:44:40,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:40 WrapperNode
[2020-08-22 19:44:40,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-22 19:44:40,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-22 19:44:40,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-22 19:44:40,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-08-22 19:44:40,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:40" (1/1) ...
[2020-08-22 19:44:40,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:40" (1/1) ...
[2020-08-22 19:44:40,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:40" (1/1) ...
[2020-08-22 19:44:40,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:40" (1/1) ...
[2020-08-22 19:44:40,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:40" (1/1) ...
[2020-08-22 19:44:40,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:40" (1/1) ...
[2020-08-22 19:44:40,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:40" (1/1) ...
[2020-08-22 19:44:40,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-22 19:44:40,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-22 19:44:40,330 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-08-22 19:44:40,330 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-08-22 19:44:40,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:40" (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 19:44:40,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-22 19:44:40,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-22 19:44:40,389 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-08-22 19:44:40,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-08-22 19:44:40,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-08-22 19:44:40,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-22 19:44:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-08-22 19:44:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-08-22 19:44:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-08-22 19:44:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-22 19:44:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-08-22 19:44:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-08-22 19:44:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-22 19:44:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-08-22 19:44:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-08-22 19:44:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-22 19:44:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-22 19:44:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-22 19:44:40,735 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-22 19:44:40,736 INFO L295 CfgBuilder]: Removed 4 assume(true) statements.
[2020-08-22 19:44:40,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:44:40 BoogieIcfgContainer
[2020-08-22 19:44:40,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-22 19:44:40,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-22 19:44:40,742 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-08-22 19:44:40,746 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-08-22 19:44:40,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:44:39" (1/3) ...
[2020-08-22 19:44:40,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac5586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:44:40, skipping insertion in model container
[2020-08-22 19:44:40,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:40" (2/3) ...
[2020-08-22 19:44:40,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac5586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:44:40, skipping insertion in model container
[2020-08-22 19:44:40,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:44:40" (3/3) ...
[2020-08-22 19:44:40,750 INFO L109 eAbstractionObserver]: Analyzing ICFG indp4f.c
[2020-08-22 19:44:40,762 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-22 19:44:40,769 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-22 19:44:40,781 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-22 19:44:40,804 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-08-22 19:44:40,804 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-08-22 19:44:40,805 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2020-08-22 19:44:40,805 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-22 19:44:40,805 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-22 19:44:40,805 INFO L380 AbstractCegarLoop]: Difference is false
[2020-08-22 19:44:40,805 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-22 19:44:40,806 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-22 19:44:40,823 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states.
[2020-08-22 19:44:40,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2020-08-22 19:44:40,834 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-22 19:44:40,835 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]
[2020-08-22 19:44:40,836 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 19:44:40,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 19:44:40,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1846170158, now seen corresponding path program 1 times
[2020-08-22 19:44:40,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 19:44:40,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67368653]
[2020-08-22 19:44:40,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 19:44:40,904 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-08-22 19:44:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 19:44:41,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 19:44:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 19:44:41,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-22 19:44:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 19:44:41,064 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 19:44:41,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67368653]
[2020-08-22 19:44:41,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 19:44:41,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-22 19:44:41,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91629196]
[2020-08-22 19:44:41,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-22 19:44:41,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 19:44:41,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-22 19:44:41,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-22 19:44:41,093 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 3 states.
[2020-08-22 19:44:41,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 19:44:41,304 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions.
[2020-08-22 19:44:41,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-08-22 19:44:41,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33
[2020-08-22 19:44:41,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 19:44:41,326 INFO L225 Difference]: With dead ends: 109
[2020-08-22 19:44:41,326 INFO L226 Difference]: Without dead ends: 56
[2020-08-22 19:44:41,333 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 19:44:41,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2020-08-22 19:44:41,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56.
[2020-08-22 19:44:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states.
[2020-08-22 19:44:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions.
[2020-08-22 19:44:41,397 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 33
[2020-08-22 19:44:41,397 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-22 19:44:41,397 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions.
[2020-08-22 19:44:41,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-22 19:44:41,398 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions.
[2020-08-22 19:44:41,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2020-08-22 19:44:41,400 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-22 19:44:41,400 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]
[2020-08-22 19:44:41,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-22 19:44:41,401 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 19:44:41,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 19:44:41,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1457656721, now seen corresponding path program 1 times
[2020-08-22 19:44:41,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 19:44:41,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504613581]
[2020-08-22 19:44:41,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 19:44:41,405 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-08-22 19:44:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 19:44:41,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 19:44:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 19:44:41,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-22 19:44:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 19:44:41,532 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 19:44:41,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504613581]
[2020-08-22 19:44:41,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 19:44:41,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-08-22 19:44:41,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255361358]
[2020-08-22 19:44:41,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-08-22 19:44:41,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 19:44:41,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-08-22 19:44:41,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-08-22 19:44:41,537 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 5 states.
[2020-08-22 19:44:41,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 19:44:41,825 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions.
[2020-08-22 19:44:41,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-08-22 19:44:41,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33
[2020-08-22 19:44:41,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 19:44:41,830 INFO L225 Difference]: With dead ends: 108
[2020-08-22 19:44:41,830 INFO L226 Difference]: Without dead ends: 78
[2020-08-22 19:44:41,832 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 19:44:41,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2020-08-22 19:44:41,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 59.
[2020-08-22 19:44:41,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states.
[2020-08-22 19:44:41,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions.
[2020-08-22 19:44:41,853 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 33
[2020-08-22 19:44:41,854 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-22 19:44:41,854 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions.
[2020-08-22 19:44:41,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-08-22 19:44:41,854 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions.
[2020-08-22 19:44:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-08-22 19:44:41,861 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-22 19:44:41,861 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]
[2020-08-22 19:44:41,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-22 19:44:41,862 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 19:44:41,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 19:44:41,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1203755678, now seen corresponding path program 1 times
[2020-08-22 19:44:41,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 19:44:41,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428073715]
[2020-08-22 19:44:41,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 19:44:41,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-22 19:44:41,902 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception:
java.lang.NullPointerException
at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:413)
at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:293)
at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.<init>(AcceleratedInterpolation.java:207)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:75)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:127)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
[2020-08-22 19:44:41,908 INFO L168 Benchmark]: Toolchain (without parser) took 2030.66 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 100.8 MB in the beginning and 85.9 MB in the end (delta: 14.8 MB). Peak memory consumption was 72.0 MB. Max. memory is 7.1 GB.
[2020-08-22 19:44:41,909 INFO L168 Benchmark]: CDTParser took 1.04 ms. Allocated memory is still 144.2 MB. Free memory was 119.8 MB in the beginning and 119.4 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB.
[2020-08-22 19:44:41,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.42 ms. Allocated memory is still 144.2 MB. Free memory was 100.8 MB in the beginning and 90.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB.
[2020-08-22 19:44:41,911 INFO L168 Benchmark]: Boogie Preprocessor took 154.52 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 90.2 MB in the beginning and 178.5 MB in the end (delta: -88.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
[2020-08-22 19:44:41,912 INFO L168 Benchmark]: RCFGBuilder took 410.93 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 160.1 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB.
[2020-08-22 19:44:41,913 INFO L168 Benchmark]: TraceAbstraction took 1163.27 ms. Allocated memory is still 201.3 MB. Free memory was 159.1 MB in the beginning and 85.9 MB in the end (delta: 73.1 MB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB.
[2020-08-22 19:44:41,917 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 1.04 ms. Allocated memory is still 144.2 MB. Free memory was 119.8 MB in the beginning and 119.4 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 293.42 ms. Allocated memory is still 144.2 MB. Free memory was 100.8 MB in the beginning and 90.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 154.52 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 90.2 MB in the beginning and 178.5 MB in the end (delta: -88.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 410.93 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 160.1 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1163.27 ms. Allocated memory is still 201.3 MB. Free memory was 159.1 MB in the beginning and 85.9 MB in the end (delta: 73.1 MB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- ExceptionOrErrorResult: NullPointerException: null
de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:413)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...