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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/array-tiling/mlceu.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:33:32,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:33:32,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:33:32,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 05:33:32,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 05:33:32,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 05:33:32,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 05:33:32,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 05:33:32,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 05:33:32,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 05:33:32,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 05:33:32,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 05:33:32,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 05:33:32,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 05:33:32,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 05:33:32,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 05:33:32,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 05:33:32,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 05:33:32,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 05:33:32,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 05:33:32,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 05:33:32,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 05:33:32,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 05:33:32,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 05:33:32,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 05:33:32,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 05:33:32,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 05:33:32,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 05:33:32,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 05:33:32,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 05:33:32,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 05:33:32,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 05:33:32,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 05:33:32,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 05:33:32,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 05:33:32,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 05:33:32,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 05:33:32,833 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:33:32,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:33:32,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:33:32,836 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:33:32,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:33:32,839 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:33:32,839 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:33:32,839 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:33:32,839 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:33:32,840 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:33:32,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:33:32,841 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:33:32,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:33:32,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:33:32,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:33:32,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:33:32,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:33:32,843 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:33:32,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:33:32,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:33:32,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:33:32,844 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:33:32,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:33:32,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:33:32,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:33:32,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:33:32,845 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:33:32,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:33:32,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:33:32,846 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:33:32,907 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:33:32,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:33:32,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:33:32,931 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:33:32,931 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:33:32,932 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mlceu.c [2019-09-09 05:33:33,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65ca29bd9/33de912e7161494eba44a9c49e939d0e/FLAG272ad3896 [2019-09-09 05:33:33,440 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:33:33,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mlceu.c [2019-09-09 05:33:33,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65ca29bd9/33de912e7161494eba44a9c49e939d0e/FLAG272ad3896 [2019-09-09 05:33:33,804 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65ca29bd9/33de912e7161494eba44a9c49e939d0e [2019-09-09 05:33:33,815 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:33:33,817 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:33:33,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:33:33,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:33:33,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:33:33,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:33:33" (1/1) ... [2019-09-09 05:33:33,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ad6efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:33, skipping insertion in model container [2019-09-09 05:33:33,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:33:33" (1/1) ... [2019-09-09 05:33:33,838 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:33:33,861 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:33:34,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:33:34,086 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:33:34,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:33:34,114 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:33:34,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:34 WrapperNode [2019-09-09 05:33:34,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:33:34,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:33:34,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:33:34,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:33:34,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:34" (1/1) ... [2019-09-09 05:33:34,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:34" (1/1) ... [2019-09-09 05:33:34,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:34" (1/1) ... [2019-09-09 05:33:34,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:34" (1/1) ... [2019-09-09 05:33:34,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:34" (1/1) ... [2019-09-09 05:33:34,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:34" (1/1) ... [2019-09-09 05:33:34,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:34" (1/1) ... [2019-09-09 05:33:34,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:33:34,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:33:34,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:33:34,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:33:34,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:34" (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 [2019-09-09 05:33:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:33:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:33:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-09 05:33:34,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:33:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:33:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-09 05:33:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-09 05:33:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 05:33:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-09 05:33:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:33:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-09 05:33:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-09 05:33:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-09 05:33:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:33:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:33:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-09 05:33:34,527 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:33:34,528 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-09 05:33:34,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:33:34 BoogieIcfgContainer [2019-09-09 05:33:34,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:33:34,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:33:34,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:33:34,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:33:34,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:33:33" (1/3) ... [2019-09-09 05:33:34,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c91bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:33:34, skipping insertion in model container [2019-09-09 05:33:34,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:33:34" (2/3) ... [2019-09-09 05:33:34,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c91bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:33:34, skipping insertion in model container [2019-09-09 05:33:34,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:33:34" (3/3) ... [2019-09-09 05:33:34,536 INFO L109 eAbstractionObserver]: Analyzing ICFG mlceu.c [2019-09-09 05:33:34,547 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:33:34,554 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:33:34,570 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:33:34,598 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:33:34,599 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:33:34,599 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:33:34,599 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:33:34,599 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:33:34,599 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:33:34,599 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:33:34,599 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:33:34,617 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-09-09 05:33:34,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-09 05:33:34,627 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:33:34,628 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:33:34,631 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:33:34,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:33:34,636 INFO L82 PathProgramCache]: Analyzing trace with hash 163391893, now seen corresponding path program 1 times [2019-09-09 05:33:34,638 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:33:34,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:33:34,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:33:34,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:33:34,680 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:33:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:33:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:33:34,773 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:33:34,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-09 05:33:34,774 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:33:34,777 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:33:34,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:33:34,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:33:34,791 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-09-09 05:33:34,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:33:34,805 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2019-09-09 05:33:34,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:33:34,806 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-09-09 05:33:34,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:33:34,814 INFO L225 Difference]: With dead ends: 26 [2019-09-09 05:33:34,814 INFO L226 Difference]: Without dead ends: 21 [2019-09-09 05:33:34,816 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:33:34,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-09 05:33:34,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-09 05:33:34,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-09 05:33:34,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-09-09 05:33:34,847 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2019-09-09 05:33:34,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:33:34,848 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-09-09 05:33:34,848 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:33:34,848 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-09-09 05:33:34,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-09 05:33:34,849 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:33:34,849 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:33:34,850 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:33:34,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:33:34,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1009214006, now seen corresponding path program 1 times [2019-09-09 05:33:34,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:33:34,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:33:34,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:33:34,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:33:34,852 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:33:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:33:34,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:33:34,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:33:34,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:33:34,946 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:33:34,948 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:33:34,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:33:34,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:33:34,949 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 3 states. [2019-09-09 05:33:35,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:33:35,033 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2019-09-09 05:33:35,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:33:35,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-09-09 05:33:35,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:33:35,034 INFO L225 Difference]: With dead ends: 24 [2019-09-09 05:33:35,035 INFO L226 Difference]: Without dead ends: 24 [2019-09-09 05:33:35,036 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:33:35,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-09 05:33:35,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-09-09 05:33:35,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-09 05:33:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-09-09 05:33:35,041 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2019-09-09 05:33:35,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:33:35,042 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-09-09 05:33:35,042 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:33:35,042 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-09-09 05:33:35,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-09 05:33:35,043 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:33:35,043 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:33:35,044 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:33:35,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:33:35,044 INFO L82 PathProgramCache]: Analyzing trace with hash 545846646, now seen corresponding path program 1 times [2019-09-09 05:33:35,044 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:33:35,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:33:35,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:33:35,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:33:35,046 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:33:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:33:35,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:33:35,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 05:33:35,116 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 05:33:35,117 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2019-09-09 05:33:35,119 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [8], [14], [16], [21], [23], [27], [35], [48], [51], [53], [59], [60], [61], [63] [2019-09-09 05:33:35,150 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 05:33:35,150 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 05:33:35,229 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 05:33:35,232 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 24 root evaluator evaluations with a maximum evaluation depth of 3. Performed 24 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 24 variables. [2019-09-09 05:33:35,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:33:35,237 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 05:33:35,277 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 77.5% of their original sizes. [2019-09-09 05:33:35,278 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 05:33:35,292 INFO L420 sIntCurrentIteration]: We unified 16 AI predicates to 16 [2019-09-09 05:33:35,292 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 05:33:35,293 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 05:33:35,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2019-09-09 05:33:35,295 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:33:35,295 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 05:33:35,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 05:33:35,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 05:33:35,297 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 4 states. [2019-09-09 05:33:35,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:33:35,307 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-09-09 05:33:35,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:33:35,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-09-09 05:33:35,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:33:35,308 INFO L225 Difference]: With dead ends: 7 [2019-09-09 05:33:35,308 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 05:33:35,310 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 05:33:35,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 05:33:35,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 05:33:35,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 05:33:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 05:33:35,311 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-09-09 05:33:35,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:33:35,312 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 05:33:35,312 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 05:33:35,312 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 05:33:35,314 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 05:33:35,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:33:35 BoogieIcfgContainer [2019-09-09 05:33:35,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:33:35,323 INFO L168 Benchmark]: Toolchain (without parser) took 1505.49 ms. Allocated memory was 131.6 MB in the beginning and 197.1 MB in the end (delta: 65.5 MB). Free memory was 88.1 MB in the beginning and 116.1 MB in the end (delta: -28.0 MB). Peak memory consumption was 37.6 MB. Max. memory is 7.1 GB. [2019-09-09 05:33:35,324 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 131.6 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 05:33:35,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.81 ms. Allocated memory is still 131.6 MB. Free memory was 87.9 MB in the beginning and 78.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-09-09 05:33:35,327 INFO L168 Benchmark]: Boogie Preprocessor took 113.77 ms. Allocated memory was 131.6 MB in the beginning and 197.1 MB in the end (delta: 65.5 MB). Free memory was 78.2 MB in the beginning and 173.5 MB in the end (delta: -95.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2019-09-09 05:33:35,327 INFO L168 Benchmark]: RCFGBuilder took 299.83 ms. Allocated memory is still 197.1 MB. Free memory was 173.5 MB in the beginning and 158.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2019-09-09 05:33:35,328 INFO L168 Benchmark]: TraceAbstraction took 790.70 ms. Allocated memory is still 197.1 MB. Free memory was 158.5 MB in the beginning and 116.1 MB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2019-09-09 05:33:35,333 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 131.6 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.81 ms. Allocated memory is still 131.6 MB. Free memory was 87.9 MB in the beginning and 78.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.77 ms. Allocated memory was 131.6 MB in the beginning and 197.1 MB in the end (delta: 65.5 MB). Free memory was 78.2 MB in the beginning and 173.5 MB in the end (delta: -95.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 299.83 ms. Allocated memory is still 197.1 MB. Free memory was 173.5 MB in the beginning and 158.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 790.70 ms. Allocated memory is still 197.1 MB. Free memory was 158.5 MB in the beginning and 116.1 MB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 55 SDtfs, 6 SDslu, 14 SDs, 0 SdLazy, 13 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.953125 AbsIntWeakeningRatio, 0.9375 AbsIntAvgWeakeningVarsNumRemoved, 1.375 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 1024 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...