/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 0.1.25-267fbe0 [2020-07-17 13:29:40,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:29:40,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:29:40,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:29:40,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:29:40,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:29:40,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:29:40,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:29:40,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:29:40,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:29:40,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:29:40,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:29:40,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:29:40,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:29:40,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:29:40,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:29:40,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:29:40,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:29:40,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:29:40,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:29:40,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:29:40,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:29:40,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:29:40,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:29:40,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 13:29:40,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 13:29:40,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 13:29:40,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 13:29:40,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 13:29:40,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 13:29:40,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 13:29:40,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 13:29:40,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 13:29:40,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 13:29:40,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 13:29:40,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 13:29:40,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 13:29:40,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 13:29:40,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:29:40,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:29:40,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:29:40,772 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 13:29:40,787 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:29:40,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:29:40,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:29:40,790 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:29:40,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:29:40,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:29:40,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:29:40,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:29:40,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:29:40,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:29:40,792 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:29:40,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:29:40,792 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:29:40,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:29:40,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:29:40,793 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:29:40,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:29:40,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:29:40,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:29:40,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:29:40,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:29:40,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:29:40,795 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:29:41,064 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:29:41,079 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:29:41,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:29:41,084 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:29:41,085 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:29:41,085 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2020-07-17 13:29:41,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f48bc1531/3f59699604e54ee59862db3f294fac00/FLAG0b7dc5df8 [2020-07-17 13:29:41,582 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:29:41,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2020-07-17 13:29:41,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f48bc1531/3f59699604e54ee59862db3f294fac00/FLAG0b7dc5df8 [2020-07-17 13:29:41,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f48bc1531/3f59699604e54ee59862db3f294fac00 [2020-07-17 13:29:41,988 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:29:41,991 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:29:41,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:29:41,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:29:41,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:29:41,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:29:41" (1/1) ... [2020-07-17 13:29:41,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bfa5a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:41, skipping insertion in model container [2020-07-17 13:29:41,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:29:41" (1/1) ... [2020-07-17 13:29:42,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:29:42,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:29:42,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:29:42,167 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:29:42,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:29:42,196 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:29:42,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:42 WrapperNode [2020-07-17 13:29:42,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:29:42,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:29:42,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:29:42,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:29:42,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:42" (1/1) ... [2020-07-17 13:29:42,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:42" (1/1) ... [2020-07-17 13:29:42,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:42" (1/1) ... [2020-07-17 13:29:42,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:42" (1/1) ... [2020-07-17 13:29:42,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:42" (1/1) ... [2020-07-17 13:29:42,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:42" (1/1) ... [2020-07-17 13:29:42,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:42" (1/1) ... [2020-07-17 13:29:42,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:29:42,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:29:42,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:29:42,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:29:42,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:29:42,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:29:42,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:29:42,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-17 13:29:42,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:29:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:29:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-17 13:29:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:29:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:29:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:29:42,506 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:29:42,507 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 13:29:42,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:29:42 BoogieIcfgContainer [2020-07-17 13:29:42,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:29:42,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:29:42,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:29:42,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:29:42,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:29:41" (1/3) ... [2020-07-17 13:29:42,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2d59a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:29:42, skipping insertion in model container [2020-07-17 13:29:42,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:42" (2/3) ... [2020-07-17 13:29:42,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2d59a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:29:42, skipping insertion in model container [2020-07-17 13:29:42,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:29:42" (3/3) ... [2020-07-17 13:29:42,518 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.c_1.i [2020-07-17 13:29:42,528 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:29:42,535 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 13:29:42,548 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 13:29:42,569 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:29:42,569 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:29:42,569 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:29:42,569 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:29:42,569 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:29:42,570 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:29:42,570 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:29:42,570 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:29:42,584 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-17 13:29:42,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-17 13:29:42,593 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:29:42,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:29:42,595 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:29:42,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:29:42,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1457192654, now seen corresponding path program 1 times [2020-07-17 13:29:42,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:29:42,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117751489] [2020-07-17 13:29:42,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:29:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:29:42,877 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:29:42,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117751489] [2020-07-17 13:29:42,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:29:42,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 13:29:42,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967295761] [2020-07-17 13:29:42,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 13:29:42,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:29:42,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 13:29:42,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:29:42,903 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-07-17 13:29:43,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:29:43,003 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2020-07-17 13:29:43,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 13:29:43,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-17 13:29:43,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:29:43,013 INFO L225 Difference]: With dead ends: 41 [2020-07-17 13:29:43,013 INFO L226 Difference]: Without dead ends: 21 [2020-07-17 13:29:43,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-17 13:29:43,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-17 13:29:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2020-07-17 13:29:43,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-17 13:29:43,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-07-17 13:29:43,054 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2020-07-17 13:29:43,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:29:43,054 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-07-17 13:29:43,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 13:29:43,055 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-17 13:29:43,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-17 13:29:43,056 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:29:43,056 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:29:43,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:29:43,057 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:29:43,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:29:43,057 INFO L82 PathProgramCache]: Analyzing trace with hash -630240860, now seen corresponding path program 1 times [2020-07-17 13:29:43,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:29:43,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330869084] [2020-07-17 13:29:43,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:29:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:29:43,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:29:43,174 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:29:43,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330869084] [2020-07-17 13:29:43,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:29:43,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 13:29:43,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128887884] [2020-07-17 13:29:43,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 13:29:43,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:29:43,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 13:29:43,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-17 13:29:43,178 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 7 states. [2020-07-17 13:29:43,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:29:43,293 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-07-17 13:29:43,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 13:29:43,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-07-17 13:29:43,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:29:43,295 INFO L225 Difference]: With dead ends: 29 [2020-07-17 13:29:43,295 INFO L226 Difference]: Without dead ends: 26 [2020-07-17 13:29:43,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-07-17 13:29:43,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-17 13:29:43,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-07-17 13:29:43,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-17 13:29:43,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-07-17 13:29:43,305 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2020-07-17 13:29:43,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:29:43,306 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-07-17 13:29:43,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 13:29:43,306 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-17 13:29:43,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-17 13:29:43,307 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:29:43,308 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:29:43,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 13:29:43,308 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:29:43,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:29:43,309 INFO L82 PathProgramCache]: Analyzing trace with hash 656823438, now seen corresponding path program 2 times [2020-07-17 13:29:43,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:29:43,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921639877] [2020-07-17 13:29:43,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:29:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:29:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:29:43,356 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:29:43,356 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 13:29:43,357 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 13:29:43,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 13:29:43,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 01:29:43 BoogieIcfgContainer [2020-07-17 13:29:43,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 13:29:43,371 INFO L168 Benchmark]: Toolchain (without parser) took 1381.33 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 102.7 MB in the beginning and 122.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:43,372 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 145.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 13:29:43,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 204.98 ms. Allocated memory is still 145.8 MB. Free memory was 102.5 MB in the beginning and 93.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:43,374 INFO L168 Benchmark]: Boogie Preprocessor took 27.98 ms. Allocated memory is still 145.8 MB. Free memory was 93.2 MB in the beginning and 91.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:43,375 INFO L168 Benchmark]: RCFGBuilder took 284.86 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 91.8 MB in the beginning and 173.2 MB in the end (delta: -81.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:43,376 INFO L168 Benchmark]: TraceAbstraction took 857.16 ms. Allocated memory is still 203.9 MB. Free memory was 172.6 MB in the beginning and 122.7 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. [2020-07-17 13:29:43,381 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 145.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 204.98 ms. Allocated memory is still 145.8 MB. Free memory was 102.5 MB in the beginning and 93.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.98 ms. Allocated memory is still 145.8 MB. Free memory was 93.2 MB in the beginning and 91.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 284.86 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 91.8 MB in the beginning and 173.2 MB in the end (delta: -81.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 857.16 ms. Allocated memory is still 203.9 MB. Free memory was 172.6 MB in the beginning and 122.7 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: 0.7s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.2s, 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, 26 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s 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...