/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/ss3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:44:30,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:44:30,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:44:30,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:44:30,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:44:30,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:44:30,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:44:30,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:44:30,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:44:30,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:44:30,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:44:30,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:44:30,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:44:30,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:44:30,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:44:30,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:44:30,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:44:30,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:44:30,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:44:30,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:44:30,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:44:30,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:44:30,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:44:30,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:44:30,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 17:44:30,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 17:44:30,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 17:44:30,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 17:44:30,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 17:44:30,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 17:44:30,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 17:44:30,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 17:44:30,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 17:44:30,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 17:44:30,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 17:44:30,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 17:44:30,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 17:44:30,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 17:44:30,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:44:30,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:44:30,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:44:30,769 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 17:44:30,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:44:30,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:44:30,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:44:30,787 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:44:30,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:44:30,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:44:30,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:44:30,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:44:30,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:44:30,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:44:30,789 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:44:30,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:44:30,790 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:44:30,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:44:30,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:44:30,791 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:44:30,791 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:44:30,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:44:30,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:30,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:44:30,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:44:30,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:44:30,792 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:31,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:31,289 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:31,296 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:31,298 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:31,299 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:31,300 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss3f.c [2020-09-04 17:44:31,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf4fc0622/cb5c917f07124879b959d73681fe1096/FLAG20e580c89 [2020-09-04 17:44:32,002 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:32,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss3f.c [2020-09-04 17:44:32,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf4fc0622/cb5c917f07124879b959d73681fe1096/FLAG20e580c89 [2020-09-04 17:44:32,318 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf4fc0622/cb5c917f07124879b959d73681fe1096 [2020-09-04 17:44:32,333 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:32,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:32,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:32,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:32,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:32,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:32" (1/1) ... [2020-09-04 17:44:32,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acd657e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32, skipping insertion in model container [2020-09-04 17:44:32,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:32" (1/1) ... [2020-09-04 17:44:32,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:32,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:32,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:32,637 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:32,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:32,685 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:32,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32 WrapperNode [2020-09-04 17:44:32,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:32,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:32,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:32,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:32,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32" (1/1) ... [2020-09-04 17:44:32,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32" (1/1) ... [2020-09-04 17:44:32,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32" (1/1) ... [2020-09-04 17:44:32,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32" (1/1) ... [2020-09-04 17:44:32,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32" (1/1) ... [2020-09-04 17:44:32,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32" (1/1) ... [2020-09-04 17:44:32,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32" (1/1) ... [2020-09-04 17:44:32,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:32,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:32,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:32,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:32,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32" (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 17:44:32,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:32,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:32,894 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:44:32,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:32,894 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:32,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:32,894 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:44:32,895 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:44:32,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:32,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:32,895 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:44:32,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:44:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:44:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:33,254 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:33,255 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 17:44:33,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:33 BoogieIcfgContainer [2020-09-04 17:44:33,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:33,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:33,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:33,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:33,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:32" (1/3) ... [2020-09-04 17:44:33,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563414e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:33, skipping insertion in model container [2020-09-04 17:44:33,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32" (2/3) ... [2020-09-04 17:44:33,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563414e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:33, skipping insertion in model container [2020-09-04 17:44:33,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:33" (3/3) ... [2020-09-04 17:44:33,270 INFO L109 eAbstractionObserver]: Analyzing ICFG ss3f.c [2020-09-04 17:44:33,284 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:33,299 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:33,334 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:33,360 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:33,361 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:33,361 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:33,361 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:33,361 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:33,361 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:33,361 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:33,361 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:33,380 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2020-09-04 17:44:33,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 17:44:33,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:33,395 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] [2020-09-04 17:44:33,395 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:33,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:33,402 INFO L82 PathProgramCache]: Analyzing trace with hash -464195749, now seen corresponding path program 1 times [2020-09-04 17:44:33,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:33,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565919545] [2020-09-04 17:44:33,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:33,495 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:33,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:33,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:33,707 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 17:44:33,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565919545] [2020-09-04 17:44:33,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:33,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:44:33,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271552970] [2020-09-04 17:44:33,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:44:33,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:33,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:44:33,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:33,743 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 3 states. [2020-09-04 17:44:33,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:33,976 INFO L93 Difference]: Finished difference Result 147 states and 170 transitions. [2020-09-04 17:44:33,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:44:33,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-09-04 17:44:33,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:33,992 INFO L225 Difference]: With dead ends: 147 [2020-09-04 17:44:33,992 INFO L226 Difference]: Without dead ends: 70 [2020-09-04 17:44:33,997 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 [2020-09-04 17:44:34,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-04 17:44:34,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-04 17:44:34,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-04 17:44:34,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-04 17:44:34,062 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 37 [2020-09-04 17:44:34,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:34,063 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-04 17:44:34,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:44:34,063 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-04 17:44:34,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 17:44:34,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:34,065 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] [2020-09-04 17:44:34,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:34,066 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:34,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:34,067 INFO L82 PathProgramCache]: Analyzing trace with hash 853879691, now seen corresponding path program 1 times [2020-09-04 17:44:34,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:34,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288633153] [2020-09-04 17:44:34,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:34,071 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:34,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:34,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:34,260 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 17:44:34,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288633153] [2020-09-04 17:44:34,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:34,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:44:34,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654351542] [2020-09-04 17:44:34,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:44:34,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:34,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:44:34,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:44:34,270 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 5 states. [2020-09-04 17:44:34,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:34,589 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2020-09-04 17:44:34,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:44:34,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-09-04 17:44:34,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:34,593 INFO L225 Difference]: With dead ends: 144 [2020-09-04 17:44:34,593 INFO L226 Difference]: Without dead ends: 102 [2020-09-04 17:44:34,597 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 [2020-09-04 17:44:34,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-04 17:44:34,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 75. [2020-09-04 17:44:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-04 17:44:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-09-04 17:44:34,638 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 37 [2020-09-04 17:44:34,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:34,641 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-09-04 17:44:34,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:44:34,642 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-09-04 17:44:34,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-04 17:44:34,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:34,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:44:34,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:34,646 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:34,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:34,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1805527949, now seen corresponding path program 1 times [2020-09-04 17:44:34,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:34,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901345929] [2020-09-04 17:44:34,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:34,680 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:34,730 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 17:44:34,730 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:34,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:44:34,760 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 17:44:34,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:34 BoogieIcfgContainer [2020-09-04 17:44:34,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:34,765 INFO L168 Benchmark]: Toolchain (without parser) took 2428.31 ms. Allocated memory was 140.0 MB in the beginning and 234.4 MB in the end (delta: 94.4 MB). Free memory was 103.1 MB in the beginning and 183.3 MB in the end (delta: -80.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:34,766 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.0 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 17:44:34,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.54 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 92.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:34,768 INFO L168 Benchmark]: Boogie Preprocessor took 129.86 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.2 MB in the beginning and 180.2 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:34,769 INFO L168 Benchmark]: RCFGBuilder took 444.43 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 158.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:34,770 INFO L168 Benchmark]: TraceAbstraction took 1499.14 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 158.0 MB in the beginning and 183.3 MB in the end (delta: -25.3 MB). Peak memory consumption was 6.1 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:34,775 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 140.0 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 349.54 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 92.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.86 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.2 MB in the beginning and 180.2 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 444.43 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 158.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1499.14 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 158.0 MB in the beginning and 183.3 MB in the end (delta: -25.3 MB). Peak memory consumption was 6.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i