/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/ldv-regression/test_while_int.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:41:03,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:41:03,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:41:03,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:41:03,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:41:03,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:41:03,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:41:03,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:41:03,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:41:03,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:41:03,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:41:03,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:41:03,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:41:03,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:41:03,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:41:03,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:41:03,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:41:03,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:41:03,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:41:03,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:41:03,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:41:03,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:41:03,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:41:03,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:41:03,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:41:03,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:41:03,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:41:03,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:41:03,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:41:03,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 16:41:03,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 16:41:03,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 16:41:03,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 16:41:03,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 16:41:03,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 16:41:03,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 16:41:03,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 16:41:03,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 16:41:03,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:41:03,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:41:03,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:41:03,994 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 16:41:04,011 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:41:04,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:41:04,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:41:04,013 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:41:04,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:41:04,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:41:04,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:41:04,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:41:04,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:41:04,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:41:04,016 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:41:04,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:41:04,016 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:41:04,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:41:04,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:41:04,017 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:41:04,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:41:04,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:41:04,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:41:04,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:41:04,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:41:04,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:41:04,019 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:41:04,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:41:04,508 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:41:04,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:41:04,515 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:41:04,515 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:41:04,516 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2020-09-04 16:41:04,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/397e6acca/e96274a3f71c44baabd8ae7f06e3fb50/FLAG9593dd782 [2020-09-04 16:41:05,148 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:41:05,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2020-09-04 16:41:05,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/397e6acca/e96274a3f71c44baabd8ae7f06e3fb50/FLAG9593dd782 [2020-09-04 16:41:05,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/397e6acca/e96274a3f71c44baabd8ae7f06e3fb50 [2020-09-04 16:41:05,505 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:41:05,507 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:41:05,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:41:05,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:41:05,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:41:05,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:41:05" (1/1) ... [2020-09-04 16:41:05,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@782f63b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:05, skipping insertion in model container [2020-09-04 16:41:05,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:41:05" (1/1) ... [2020-09-04 16:41:05,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:41:05,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:41:05,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:41:05,764 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:41:05,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:41:05,796 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:41:05,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:05 WrapperNode [2020-09-04 16:41:05,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:41:05,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:41:05,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:41:05,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:41:05,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:05" (1/1) ... [2020-09-04 16:41:05,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:05" (1/1) ... [2020-09-04 16:41:05,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:05" (1/1) ... [2020-09-04 16:41:05,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:05" (1/1) ... [2020-09-04 16:41:05,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:05" (1/1) ... [2020-09-04 16:41:05,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:05" (1/1) ... [2020-09-04 16:41:05,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:05" (1/1) ... [2020-09-04 16:41:05,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:41:05,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:41:05,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:41:05,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:41:05,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:05" (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 16:41:05,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:41:05,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:41:05,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-04 16:41:05,990 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:41:05,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:41:05,990 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-04 16:41:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:41:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:41:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:41:06,162 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:41:06,162 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 16:41:06,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:41:06 BoogieIcfgContainer [2020-09-04 16:41:06,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:41:06,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:41:06,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:41:06,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:41:06,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:41:05" (1/3) ... [2020-09-04 16:41:06,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326f6e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:41:06, skipping insertion in model container [2020-09-04 16:41:06,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:05" (2/3) ... [2020-09-04 16:41:06,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326f6e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:41:06, skipping insertion in model container [2020-09-04 16:41:06,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:41:06" (3/3) ... [2020-09-04 16:41:06,177 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.c_1.i [2020-09-04 16:41:06,187 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:41:06,196 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:41:06,220 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:41:06,249 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:41:06,249 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:41:06,250 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:41:06,250 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:41:06,250 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:41:06,250 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:41:06,250 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:41:06,251 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:41:06,268 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-09-04 16:41:06,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-04 16:41:06,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:06,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:41:06,282 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:06,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:06,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1457192654, now seen corresponding path program 1 times [2020-09-04 16:41:06,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:06,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834810989] [2020-09-04 16:41:06,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:06,375 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:06,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:06,528 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 16:41:06,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834810989] [2020-09-04 16:41:06,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:06,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:41:06,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384317874] [2020-09-04 16:41:06,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:41:06,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:06,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:41:06,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:41:06,591 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-09-04 16:41:06,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:06,747 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2020-09-04 16:41:06,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:41:06,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-04 16:41:06,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:06,758 INFO L225 Difference]: With dead ends: 41 [2020-09-04 16:41:06,758 INFO L226 Difference]: Without dead ends: 21 [2020-09-04 16:41:06,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-04 16:41:06,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-04 16:41:06,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2020-09-04 16:41:06,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-09-04 16:41:06,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-09-04 16:41:06,808 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2020-09-04 16:41:06,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:06,809 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-09-04 16:41:06,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:41:06,810 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-09-04 16:41:06,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-04 16:41:06,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:06,811 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:41:06,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:41:06,811 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:06,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:06,812 INFO L82 PathProgramCache]: Analyzing trace with hash -630240860, now seen corresponding path program 1 times [2020-09-04 16:41:06,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:06,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564746467] [2020-09-04 16:41:06,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:06,837 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:06,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:06,932 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 16:41:06,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564746467] [2020-09-04 16:41:06,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:06,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 16:41:06,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183699758] [2020-09-04 16:41:06,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 16:41:06,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:06,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 16:41:06,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-04 16:41:06,936 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 7 states. [2020-09-04 16:41:07,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:07,046 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-09-04 16:41:07,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 16:41:07,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-09-04 16:41:07,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:07,048 INFO L225 Difference]: With dead ends: 29 [2020-09-04 16:41:07,049 INFO L226 Difference]: Without dead ends: 26 [2020-09-04 16:41:07,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:41:07,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-04 16:41:07,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-09-04 16:41:07,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-04 16:41:07,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-09-04 16:41:07,059 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2020-09-04 16:41:07,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:07,060 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-09-04 16:41:07,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 16:41:07,060 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-09-04 16:41:07,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-04 16:41:07,061 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:07,061 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:41:07,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:41:07,062 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:07,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:07,063 INFO L82 PathProgramCache]: Analyzing trace with hash 656823438, now seen corresponding path program 2 times [2020-09-04 16:41:07,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:07,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780758490] [2020-09-04 16:41:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:07,076 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:41:07,088 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:41:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:41:07,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:41:07,121 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:41:07,121 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:41:07,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:41:07,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:41:07 BoogieIcfgContainer [2020-09-04 16:41:07,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:41:07,144 INFO L168 Benchmark]: Toolchain (without parser) took 1636.61 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 101.7 MB in the beginning and 119.2 MB in the end (delta: -17.5 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:41:07,145 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 144.7 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-09-04 16:41:07,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.14 ms. Allocated memory is still 144.7 MB. Free memory was 101.5 MB in the beginning and 92.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:41:07,148 INFO L168 Benchmark]: Boogie Preprocessor took 115.98 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 92.3 MB in the beginning and 180.3 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:41:07,149 INFO L168 Benchmark]: RCFGBuilder took 253.95 ms. Allocated memory is still 201.3 MB. Free memory was 180.3 MB in the beginning and 169.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:41:07,149 INFO L168 Benchmark]: TraceAbstraction took 972.40 ms. Allocated memory is still 201.3 MB. Free memory was 169.0 MB in the beginning and 119.2 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. [2020-09-04 16:41:07,153 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 144.7 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 289.14 ms. Allocated memory is still 144.7 MB. Free memory was 101.5 MB in the beginning and 92.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.98 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 92.3 MB in the beginning and 180.3 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 253.95 ms. Allocated memory is still 201.3 MB. Free memory was 180.3 MB in the beginning and 169.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 972.40 ms. Allocated memory is still 201.3 MB. Free memory was 169.0 MB in the beginning and 119.2 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i=0; [L13] COND TRUE i<5 [L14] i++ [L16] (i!=3) ? (0) : __blast_assert () [L13] COND TRUE i<5 [L14] i++ [L16] (i!=3) ? (0) : __blast_assert () [L13] COND TRUE i<5 [L14] i++ [L16] (i!=3) ? (0) : __blast_assert () [L16] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 15 SDslu, 60 SDs, 0 SdLazy, 48 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...