/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/reducercommutativity/rangesum05.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:43:15,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:43:15,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:43:15,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:43:15,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:43:15,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:43:15,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:43:15,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:43:15,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:43:15,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:43:15,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:43:15,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:43:15,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:43:15,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:43:15,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:43:15,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:43:15,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:43:15,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:43:15,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:43:15,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:43:15,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:43:15,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:43:15,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:43:15,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:43:15,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 17:43:15,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 17:43:15,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 17:43:15,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 17:43:15,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 17:43:15,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 17:43:15,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 17:43:15,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 17:43:15,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 17:43:15,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 17:43:15,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 17:43:15,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 17:43:15,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 17:43:15,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 17:43:15,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:43:15,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:43:15,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:43:15,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:43:15,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:43:15,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:43:15,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:43:15,559 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:43:15,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:43:15,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:43:15,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:43:15,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:43:15,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:43:15,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:43:15,561 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:43:15,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:43:15,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:43:15,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:43:15,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:43:15,562 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:43:15,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:43:15,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:43:15,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:43:15,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:43:15,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:43:15,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:43:15,563 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:43:16,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:43:16,062 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:43:16,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:43:16,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:43:16,069 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:43:16,070 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum05.i [2020-09-04 17:43:16,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/177d96cba/6dbb5bfcb4bd4e4686e9c0ddc24b7e7f/FLAGb86275d85 [2020-09-04 17:43:16,717 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:43:16,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/rangesum05.i [2020-09-04 17:43:16,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/177d96cba/6dbb5bfcb4bd4e4686e9c0ddc24b7e7f/FLAGb86275d85 [2020-09-04 17:43:17,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/177d96cba/6dbb5bfcb4bd4e4686e9c0ddc24b7e7f [2020-09-04 17:43:17,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:43:17,152 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:43:17,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:17,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:43:17,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:43:17,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:17" (1/1) ... [2020-09-04 17:43:17,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12a62b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:17, skipping insertion in model container [2020-09-04 17:43:17,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:17" (1/1) ... [2020-09-04 17:43:17,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:43:17,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:43:17,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:17,426 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:43:17,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:17,474 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:43:17,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:17 WrapperNode [2020-09-04 17:43:17,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:17,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:43:17,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:43:17,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:43:17,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:17" (1/1) ... [2020-09-04 17:43:17,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:17" (1/1) ... [2020-09-04 17:43:17,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:17" (1/1) ... [2020-09-04 17:43:17,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:17" (1/1) ... [2020-09-04 17:43:17,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:17" (1/1) ... [2020-09-04 17:43:17,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:17" (1/1) ... [2020-09-04 17:43:17,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:17" (1/1) ... [2020-09-04 17:43:17,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:43:17,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:43:17,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:43:17,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:43:17,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 17:43:17,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:43:17,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:43:17,684 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2020-09-04 17:43:17,685 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2020-09-04 17:43:17,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:43:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:43:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:43:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2020-09-04 17:43:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:43:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2020-09-04 17:43:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:43:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:43:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:43:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:43:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:43:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:43:18,232 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:43:18,233 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 17:43:18,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:18 BoogieIcfgContainer [2020-09-04 17:43:18,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:43:18,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:43:18,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:43:18,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:43:18,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:43:17" (1/3) ... [2020-09-04 17:43:18,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d122493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:18, skipping insertion in model container [2020-09-04 17:43:18,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:17" (2/3) ... [2020-09-04 17:43:18,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d122493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:18, skipping insertion in model container [2020-09-04 17:43:18,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:18" (3/3) ... [2020-09-04 17:43:18,248 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum05.i [2020-09-04 17:43:18,258 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:43:18,268 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:43:18,291 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:43:18,320 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:43:18,320 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:43:18,321 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:43:18,321 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:43:18,321 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:43:18,321 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:43:18,321 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:43:18,321 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:43:18,340 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2020-09-04 17:43:18,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-04 17:43:18,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:18,357 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-04 17:43:18,358 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:18,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:18,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1280957069, now seen corresponding path program 1 times [2020-09-04 17:43:18,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:18,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049924871] [2020-09-04 17:43:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:18,457 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:18,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:18,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 17:43:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:18,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 17:43:18,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049924871] [2020-09-04 17:43:18,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:18,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2020-09-04 17:43:18,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224561797] [2020-09-04 17:43:18,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-09-04 17:43:18,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:18,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-09-04 17:43:18,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:43:18,728 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 38 states. [2020-09-04 17:43:18,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-04 17:43:18,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:43:18,747 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: at least one of both input predicates is unknown: 89#true or 128#unknown at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.SdHoareTripleChecker$CheckHelper.check(SdHoareTripleChecker.java:151) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.SdHoareTripleChecker.checkCall(SdHoareTripleChecker.java:73) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkCall(EfficientHoareTripleChecker.java:72) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkCall(CachingHoareTripleChecker.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$CallSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:401) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:256) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.callSuccessors(TotalizeNwa.java:260) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.callSuccessors(ComplementDeterministicNwa.java:131) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:252) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:244) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addCallsAndSuccessors(NestedWordAutomatonReachableStates.java:1087) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:967) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:743) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:672) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:471) 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.(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) [2020-09-04 17:43:18,756 INFO L168 Benchmark]: Toolchain (without parser) took 1602.55 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 102.4 MB in the beginning and 135.4 MB in the end (delta: -33.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:18,758 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 17:43:18,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.78 ms. Allocated memory is still 145.8 MB. Free memory was 102.2 MB in the beginning and 91.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:18,760 INFO L168 Benchmark]: Boogie Preprocessor took 132.48 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 91.8 MB in the beginning and 179.1 MB in the end (delta: -87.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:18,761 INFO L168 Benchmark]: RCFGBuilder took 631.28 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 157.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:18,762 INFO L168 Benchmark]: TraceAbstraction took 511.94 ms. Allocated memory is still 201.9 MB. Free memory was 156.6 MB in the beginning and 135.4 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:18,766 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 321.78 ms. Allocated memory is still 145.8 MB. Free memory was 102.2 MB in the beginning and 91.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.48 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 91.8 MB in the beginning and 179.1 MB in the end (delta: -87.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 631.28 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 157.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 511.94 ms. Allocated memory is still 201.9 MB. Free memory was 156.6 MB in the beginning and 135.4 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: at least one of both input predicates is unknown: 89#true or 128#unknown de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 89#true or 128#unknown: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...