/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/loops/sum01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:44:57,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:44:57,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:44:57,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:44:57,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:44:57,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:44:57,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:44:57,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:44:57,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:44:57,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:44:57,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:44:57,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:44:57,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:44:57,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:44:57,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:44:57,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:44:57,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:44:57,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:44:57,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:44:57,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:44:57,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:44:57,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:44:57,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:44:57,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:44:57,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 17:44:57,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 17:44:57,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 17:44:57,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 17:44:57,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 17:44:57,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 17:44:57,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 17:44:57,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 17:44:57,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 17:44:57,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 17:44:57,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 17:44:57,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 17:44:57,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 17:44:57,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 17:44:57,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:44:57,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:44:57,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:44:57,754 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 17:44:57,781 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:44:57,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:44:57,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:44:57,784 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:44:57,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:44:57,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:44:57,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:44:57,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:44:57,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:44:57,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:44:57,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:44:57,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:44:57,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:44:57,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:44:57,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:44:57,787 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:44:57,787 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:44:57,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:44:57,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:57,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:44:57,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:44:57,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:44:57,789 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:58,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:58,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:58,292 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:58,294 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:58,295 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:58,296 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-1.i [2020-09-04 17:44:58,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e6a8b4e0/c9f2e0addfb3482e9dc5eec6225a7582/FLAG9ad261ae9 [2020-09-04 17:44:58,959 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:58,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum01-1.i [2020-09-04 17:44:58,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e6a8b4e0/c9f2e0addfb3482e9dc5eec6225a7582/FLAG9ad261ae9 [2020-09-04 17:44:59,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e6a8b4e0/c9f2e0addfb3482e9dc5eec6225a7582 [2020-09-04 17:44:59,340 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:59,343 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:59,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:59,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:59,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:59,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:59" (1/1) ... [2020-09-04 17:44:59,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457b3941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:59, skipping insertion in model container [2020-09-04 17:44:59,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:59" (1/1) ... [2020-09-04 17:44:59,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:59,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:59,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:59,637 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:59,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:59,685 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:59,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:59 WrapperNode [2020-09-04 17:44:59,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:59,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:59,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:59,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:59,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:59" (1/1) ... [2020-09-04 17:44:59,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:59" (1/1) ... [2020-09-04 17:44:59,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:59" (1/1) ... [2020-09-04 17:44:59,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:59" (1/1) ... [2020-09-04 17:44:59,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:59" (1/1) ... [2020-09-04 17:44:59,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:59" (1/1) ... [2020-09-04 17:44:59,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:59" (1/1) ... [2020-09-04 17:44:59,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:59,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:59,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:59,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:59,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:59" (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 17:44:59,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:59,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:59,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:59,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-04 17:44:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:45:00,105 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:45:00,105 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 17:45:00,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:45:00 BoogieIcfgContainer [2020-09-04 17:45:00,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:45:00,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:45:00,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:45:00,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:45:00,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:59" (1/3) ... [2020-09-04 17:45:00,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f41e1ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:45:00, skipping insertion in model container [2020-09-04 17:45:00,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:59" (2/3) ... [2020-09-04 17:45:00,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f41e1ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:45:00, skipping insertion in model container [2020-09-04 17:45:00,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:45:00" (3/3) ... [2020-09-04 17:45:00,122 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-1.i [2020-09-04 17:45:00,136 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:45:00,147 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:45:00,201 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:45:00,247 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:45:00,247 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:45:00,247 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:45:00,247 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:45:00,247 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:45:00,248 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:45:00,248 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:45:00,248 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:45:00,267 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-09-04 17:45:00,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-04 17:45:00,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:45:00,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:45:00,282 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:45:00,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:45:00,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1882057920, now seen corresponding path program 1 times [2020-09-04 17:45:00,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:45:00,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305192714] [2020-09-04 17:45:00,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:45:00,377 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:45:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:45:00,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:45:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:45:00,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:45:00,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305192714] [2020-09-04 17:45:00,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:45:00,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-04 17:45:00,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603904115] [2020-09-04 17:45:00,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-04 17:45:00,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:45:00,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-04 17:45:00,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 17:45:00,508 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-09-04 17:45:00,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:45:00,541 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-09-04 17:45:00,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-04 17:45:00,543 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-09-04 17:45:00,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:45:00,555 INFO L225 Difference]: With dead ends: 37 [2020-09-04 17:45:00,555 INFO L226 Difference]: Without dead ends: 20 [2020-09-04 17:45:00,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 17:45:00,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-09-04 17:45:00,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-09-04 17:45:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-09-04 17:45:00,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-09-04 17:45:00,615 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2020-09-04 17:45:00,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:45:00,616 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-09-04 17:45:00,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-04 17:45:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-09-04 17:45:00,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-04 17:45:00,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:45:00,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:45:00,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:45:00,619 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:45:00,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:45:00,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1869128626, now seen corresponding path program 1 times [2020-09-04 17:45:00,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:45:00,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277625073] [2020-09-04 17:45:00,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:45:00,622 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:45:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:45:00,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:45:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:45:00,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:45:00,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277625073] [2020-09-04 17:45:00,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:45:00,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:45:00,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541185692] [2020-09-04 17:45:00,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:45:00,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:45:00,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:45:00,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:45:00,735 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2020-09-04 17:45:00,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:45:00,791 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-09-04 17:45:00,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 17:45:00,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-04 17:45:00,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:45:00,793 INFO L225 Difference]: With dead ends: 31 [2020-09-04 17:45:00,794 INFO L226 Difference]: Without dead ends: 26 [2020-09-04 17:45:00,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:45:00,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-04 17:45:00,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-09-04 17:45:00,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-04 17:45:00,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-09-04 17:45:00,804 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 14 [2020-09-04 17:45:00,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:45:00,804 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-09-04 17:45:00,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:45:00,805 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-09-04 17:45:00,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-04 17:45:00,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:45:00,806 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] [2020-09-04 17:45:00,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:45:00,807 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:45:00,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:45:00,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1535432394, now seen corresponding path program 1 times [2020-09-04 17:45:00,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:45:00,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114330289] [2020-09-04 17:45:00,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:45:03,055 INFO L273 leratedInterpolation]: Starting analysis with loop acceleration approximation PRECISE [2020-09-04 17:45:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:45:03,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:45:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:45:03,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:45:18,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114330289] [2020-09-04 17:45:18,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:45:18,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 17:45:18,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276053574] [2020-09-04 17:45:18,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 17:45:18,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:45:18,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 17:45:18,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=182, Unknown=5, NotChecked=0, Total=240 [2020-09-04 17:45:18,855 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 13 states. [2020-09-04 17:45:26,717 WARN L193 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 113 DAG size of output: 110 [2020-09-04 17:45:35,604 WARN L193 SmtUtils]: Spent 4.36 s on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2020-09-04 17:45:37,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:45:37,232 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-09-04 17:45:37,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 17:45:37,234 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2020-09-04 17:45:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:45:37,236 INFO L225 Difference]: With dead ends: 51 [2020-09-04 17:45:37,236 INFO L226 Difference]: Without dead ends: 31 [2020-09-04 17:45:37,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=81, Invalid=293, Unknown=6, NotChecked=0, Total=380 [2020-09-04 17:45:37,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-04 17:45:37,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2020-09-04 17:45:37,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-04 17:45:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-09-04 17:45:37,249 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2020-09-04 17:45:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:45:37,250 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-09-04 17:45:37,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 17:45:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-09-04 17:45:37,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-04 17:45:37,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:45:37,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:45:37,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:45:37,252 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:45:37,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:45:37,252 INFO L82 PathProgramCache]: Analyzing trace with hash -927596731, now seen corresponding path program 1 times [2020-09-04 17:45:37,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:45:37,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57894192] [2020-09-04 17:45:37,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:45:41,471 INFO L273 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-09-04 17:45:41,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 17:45:41,474 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: must have same length at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.pairwiseEquality(SmtUtils.java:418) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.constructEpsilon(AcceleratedInterpolation.java:329) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:415) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:288) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(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.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(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.(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 17:45:41,480 INFO L168 Benchmark]: Toolchain (without parser) took 42136.95 ms. Allocated memory was 110.1 MB in the beginning and 203.9 MB in the end (delta: 93.8 MB). Free memory was 76.2 MB in the beginning and 187.6 MB in the end (delta: -111.4 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2020-09-04 17:45:41,481 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 110.1 MB. Free memory was 93.8 MB in the beginning and 93.7 MB in the end (delta: 104.9 kB). Peak memory consumption was 104.9 kB. Max. memory is 7.1 GB. [2020-09-04 17:45:41,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.75 ms. Allocated memory was 110.1 MB in the beginning and 122.7 MB in the end (delta: 12.6 MB). Free memory was 76.0 MB in the beginning and 101.0 MB in the end (delta: -25.0 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2020-09-04 17:45:41,483 INFO L168 Benchmark]: Boogie Preprocessor took 109.16 ms. Allocated memory was 122.7 MB in the beginning and 163.1 MB in the end (delta: 40.4 MB). Free memory was 101.0 MB in the beginning and 149.8 MB in the end (delta: -48.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:45:41,484 INFO L168 Benchmark]: RCFGBuilder took 315.88 ms. Allocated memory is still 163.1 MB. Free memory was 149.3 MB in the beginning and 137.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-09-04 17:45:41,485 INFO L168 Benchmark]: TraceAbstraction took 41364.22 ms. Allocated memory was 163.1 MB in the beginning and 203.9 MB in the end (delta: 40.9 MB). Free memory was 137.1 MB in the beginning and 187.6 MB in the end (delta: -50.5 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:45:41,490 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 110.1 MB. Free memory was 93.8 MB in the beginning and 93.7 MB in the end (delta: 104.9 kB). Peak memory consumption was 104.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 337.75 ms. Allocated memory was 110.1 MB in the beginning and 122.7 MB in the end (delta: 12.6 MB). Free memory was 76.0 MB in the beginning and 101.0 MB in the end (delta: -25.0 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.16 ms. Allocated memory was 122.7 MB in the beginning and 163.1 MB in the end (delta: 40.4 MB). Free memory was 101.0 MB in the beginning and 149.8 MB in the end (delta: -48.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 315.88 ms. Allocated memory is still 163.1 MB. Free memory was 149.3 MB in the beginning and 137.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41364.22 ms. Allocated memory was 163.1 MB in the beginning and 203.9 MB in the end (delta: 40.9 MB). Free memory was 137.1 MB in the beginning and 187.6 MB in the end (delta: -50.5 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalArgumentException: must have same length de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: must have same length: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.pairwiseEquality(SmtUtils.java:418) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...