/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/s32iff.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-72570d3
[2020-08-22 19:44:57,080 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-08-22 19:44:57,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-22 19:44:57,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-22 19:44:57,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-22 19:44:57,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-22 19:44:57,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-22 19:44:57,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-22 19:44:57,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-22 19:44:57,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-08-22 19:44:57,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-22 19:44:57,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
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[2020-08-22 19:44:57,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-22 19:44:57,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-22 19:44:57,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-22 19:44:57,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-22 19:44:57,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-22 19:44:57,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-22 19:44:57,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-22 19:44:57,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-08-22 19:44:57,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-22 19:44:57,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2020-08-22 19:44:57,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-22 19:44:57,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
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[2020-08-22 19:44:57,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-08-22 19:44:57,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2020-08-22 19:44:57,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-08-22 19:44:57,204 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 19:44:57,218 INFO L113 SettingsManager]: Loading preferences was successful
[2020-08-22 19:44:57,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-22 19:44:57,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-22 19:44:57,221 INFO L138 SettingsManager]: * sizeof long=4
[2020-08-22 19:44:57,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-08-22 19:44:57,221 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-08-22 19:44:57,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-08-22 19:44:57,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-08-22 19:44:57,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-22 19:44:57,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-08-22 19:44:57,223 INFO L138 SettingsManager]: * sizeof long double=12
[2020-08-22 19:44:57,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-08-22 19:44:57,223 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-08-22 19:44:57,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-08-22 19:44:57,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-22 19:44:57,224 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2020-08-22 19:44:57,224 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-08-22 19:44:57,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-08-22 19:44:57,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-22 19:44:57,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-22 19:44:57,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-08-22 19:44:57,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-22 19:44:57,226 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
[2020-08-22 19:44:57,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-22 19:44:57,546 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-22 19:44:57,550 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-22 19:44:57,551 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-08-22 19:44:57,552 INFO L275 PluginConnector]: CDTParser initialized
[2020-08-22 19:44:57,552 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s32iff.c
[2020-08-22 19:44:57,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cdd5ae66/0ed74db5e58b43dc8eaab6fff9e2f666/FLAGa66e9c1f2
[2020-08-22 19:44:58,149 INFO L306 CDTParser]: Found 1 translation units.
[2020-08-22 19:44:58,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s32iff.c
[2020-08-22 19:44:58,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cdd5ae66/0ed74db5e58b43dc8eaab6fff9e2f666/FLAGa66e9c1f2
[2020-08-22 19:44:58,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cdd5ae66/0ed74db5e58b43dc8eaab6fff9e2f666
[2020-08-22 19:44:58,494 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-22 19:44:58,496 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-22 19:44:58,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-22 19:44:58,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-22 19:44:58,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-22 19:44:58,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:44:58" (1/1) ...
[2020-08-22 19:44:58,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@641d11ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:58, skipping insertion in model container
[2020-08-22 19:44:58,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:44:58" (1/1) ...
[2020-08-22 19:44:58,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-08-22 19:44:58,534 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-08-22 19:44:58,740 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-08-22 19:44:58,751 INFO L203 MainTranslator]: Completed pre-run
[2020-08-22 19:44:58,776 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-08-22 19:44:58,794 INFO L208 MainTranslator]: Completed translation
[2020-08-22 19:44:58,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:58 WrapperNode
[2020-08-22 19:44:58,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-22 19:44:58,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-22 19:44:58,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-22 19:44:58,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-08-22 19:44:58,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:58" (1/1) ...
[2020-08-22 19:44:58,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:58" (1/1) ...
[2020-08-22 19:44:58,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:58" (1/1) ...
[2020-08-22 19:44:58,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:58" (1/1) ...
[2020-08-22 19:44:58,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:58" (1/1) ...
[2020-08-22 19:44:58,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:58" (1/1) ...
[2020-08-22 19:44:58,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:58" (1/1) ...
[2020-08-22 19:44:58,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-22 19:44:58,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-22 19:44:58,930 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-08-22 19:44:58,930 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-08-22 19:44:58,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:58" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-22 19:44:59,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-22 19:44:59,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-22 19:44:59,006 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-08-22 19:44:59,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-08-22 19:44:59,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-08-22 19:44:59,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-22 19:44:59,007 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-08-22 19:44:59,007 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-08-22 19:44:59,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-08-22 19:44:59,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-22 19:44:59,007 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-08-22 19:44:59,007 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-08-22 19:44:59,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-22 19:44:59,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-22 19:44:59,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-08-22 19:44:59,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-08-22 19:44:59,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-22 19:44:59,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-22 19:44:59,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-22 19:44:59,363 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-22 19:44:59,363 INFO L295 CfgBuilder]: Removed 3 assume(true) statements.
[2020-08-22 19:44:59,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:44:59 BoogieIcfgContainer
[2020-08-22 19:44:59,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-22 19:44:59,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-22 19:44:59,372 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-08-22 19:44:59,376 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-08-22 19:44:59,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:44:58" (1/3) ...
[2020-08-22 19:44:59,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a876097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:44:59, skipping insertion in model container
[2020-08-22 19:44:59,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:58" (2/3) ...
[2020-08-22 19:44:59,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a876097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:44:59, skipping insertion in model container
[2020-08-22 19:44:59,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:44:59" (3/3) ...
[2020-08-22 19:44:59,381 INFO L109 eAbstractionObserver]: Analyzing ICFG s32iff.c
[2020-08-22 19:44:59,397 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-22 19:44:59,406 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-22 19:44:59,431 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-22 19:44:59,471 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-08-22 19:44:59,472 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-08-22 19:44:59,472 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2020-08-22 19:44:59,472 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-22 19:44:59,473 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-22 19:44:59,473 INFO L380 AbstractCegarLoop]: Difference is false
[2020-08-22 19:44:59,473 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-22 19:44:59,473 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-22 19:44:59,494 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states.
[2020-08-22 19:44:59,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2020-08-22 19:44:59,507 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-22 19:44:59,508 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 19:44:59,509 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 19:44:59,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 19:44:59,516 INFO L82 PathProgramCache]: Analyzing trace with hash 350973390, now seen corresponding path program 1 times
[2020-08-22 19:44:59,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 19:44:59,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685805096]
[2020-08-22 19:44:59,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 19:44:59,594 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-08-22 19:44:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 19:44:59,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 19:44:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 19:44:59,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-22 19:44:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 19:44:59,772 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 19:44:59,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685805096]
[2020-08-22 19:44:59,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 19:44:59,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-22 19:44:59,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051902831]
[2020-08-22 19:44:59,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-22 19:44:59,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 19:44:59,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-22 19:44:59,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-22 19:44:59,806 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states.
[2020-08-22 19:45:00,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 19:45:00,055 INFO L93 Difference]: Finished difference Result 143 states and 162 transitions.
[2020-08-22 19:45:00,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-08-22 19:45:00,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33
[2020-08-22 19:45:00,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 19:45:00,068 INFO L225 Difference]: With dead ends: 143
[2020-08-22 19:45:00,069 INFO L226 Difference]: Without dead ends: 68
[2020-08-22 19:45:00,074 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 19:45:00,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2020-08-22 19:45:00,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68.
[2020-08-22 19:45:00,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states.
[2020-08-22 19:45:00,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions.
[2020-08-22 19:45:00,130 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 33
[2020-08-22 19:45:00,131 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-22 19:45:00,131 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions.
[2020-08-22 19:45:00,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-22 19:45:00,131 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions.
[2020-08-22 19:45:00,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2020-08-22 19:45:00,133 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-22 19:45:00,133 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 19:45:00,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-22 19:45:00,134 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 19:45:00,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 19:45:00,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1688115303, now seen corresponding path program 1 times
[2020-08-22 19:45:00,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 19:45:00,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221940318]
[2020-08-22 19:45:00,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 19:45:00,139 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-08-22 19:45:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 19:45:00,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 19:45:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 19:45:00,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-22 19:45:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 19:45:00,279 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 19:45:00,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221940318]
[2020-08-22 19:45:00,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 19:45:00,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-08-22 19:45:00,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813219782]
[2020-08-22 19:45:00,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-08-22 19:45:00,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 19:45:00,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-08-22 19:45:00,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-08-22 19:45:00,285 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 5 states.
[2020-08-22 19:45:00,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 19:45:00,561 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions.
[2020-08-22 19:45:00,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-08-22 19:45:00,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33
[2020-08-22 19:45:00,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 19:45:00,564 INFO L225 Difference]: With dead ends: 142
[2020-08-22 19:45:00,564 INFO L226 Difference]: Without dead ends: 102
[2020-08-22 19:45:00,566 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 19:45:00,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2020-08-22 19:45:00,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 71.
[2020-08-22 19:45:00,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states.
[2020-08-22 19:45:00,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions.
[2020-08-22 19:45:00,584 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 33
[2020-08-22 19:45:00,584 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-22 19:45:00,584 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions.
[2020-08-22 19:45:00,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-08-22 19:45:00,585 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions.
[2020-08-22 19:45:00,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2020-08-22 19:45:00,587 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-22 19:45:00,587 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, 1, 1, 1, 1, 1, 1]
[2020-08-22 19:45:00,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-22 19:45:00,588 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 19:45:00,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 19:45:00,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1790069826, now seen corresponding path program 1 times
[2020-08-22 19:45:00,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 19:45:00,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903150690]
[2020-08-22 19:45:00,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 19:45:00,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-22 19:45:00,626 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 19:45:00,632 INFO L168 Benchmark]: Toolchain (without parser) took 2135.59 ms. Allocated memory was 145.8 MB in the beginning and 234.9 MB in the end (delta: 89.1 MB). Free memory was 103.4 MB in the beginning and 191.6 MB in the end (delta: -88.2 MB). Peak memory consumption was 921.3 kB. Max. memory is 7.1 GB.
[2020-08-22 19:45:00,634 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 145.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB.
[2020-08-22 19:45:00,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.19 ms. Allocated memory is still 145.8 MB. Free memory was 103.2 MB in the beginning and 91.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB.
[2020-08-22 19:45:00,636 INFO L168 Benchmark]: Boogie Preprocessor took 133.88 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 91.9 MB in the beginning and 178.7 MB in the end (delta: -86.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB.
[2020-08-22 19:45:00,637 INFO L168 Benchmark]: RCFGBuilder took 439.24 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 156.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB.
[2020-08-22 19:45:00,638 INFO L168 Benchmark]: TraceAbstraction took 1258.25 ms. Allocated memory was 201.3 MB in the beginning and 234.9 MB in the end (delta: 33.6 MB). Free memory was 155.8 MB in the beginning and 191.6 MB in the end (delta: -35.8 MB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-08-22 19:45:00,642 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.28 ms. Allocated memory is still 145.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 298.19 ms. Allocated memory is still 145.8 MB. Free memory was 103.2 MB in the beginning and 91.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 133.88 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 91.9 MB in the beginning and 178.7 MB in the end (delta: -86.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 439.24 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 156.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1258.25 ms. Allocated memory was 201.3 MB in the beginning and 234.9 MB in the end (delta: 33.6 MB). Free memory was 155.8 MB in the beginning and 191.6 MB in the end (delta: -35.8 MB). There was no memory consumed. 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...