/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:25:12,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:25:12,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:25:12,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:25:12,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:25:12,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:25:12,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:25:12,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:25:12,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:25:12,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:25:12,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:25:12,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:25:12,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:25:12,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:25:12,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:25:12,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:25:12,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:25:12,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:25:12,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:25:12,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:25:12,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:25:12,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:25:12,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:25:12,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:25:12,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:25:12,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:25:12,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:25:12,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:25:12,759 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 05:25:12,795 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:25:12,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:25:12,796 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:25:12,797 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:25:12,800 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:25:12,800 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:25:12,800 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:25:12,800 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:25:12,800 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:25:12,801 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:25:12,801 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:25:12,801 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:25:12,801 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:25:12,801 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:25:12,802 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:25:12,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:25:12,803 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:25:12,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:25:12,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:25:12,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:25:12,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:25:12,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:25:12,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:25:12,805 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:25:12,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:25:12,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:25:12,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:25:12,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:25:12,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:25:12,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:25:12,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:25:12,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:25:12,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:25:12,807 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:25:12,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:25:12,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:25:12,809 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:25:12,809 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:25:13,091 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:25:13,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:25:13,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:25:13,109 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:25:13,109 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:25:13,110 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product64.cil.c [2019-11-24 05:25:13,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b659320e1/d85a40d56fc04fe189453aaf6c5955f5/FLAG2d76f56f1 [2019-11-24 05:25:13,653 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:25:13,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product64.cil.c [2019-11-24 05:25:13,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b659320e1/d85a40d56fc04fe189453aaf6c5955f5/FLAG2d76f56f1 [2019-11-24 05:25:14,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b659320e1/d85a40d56fc04fe189453aaf6c5955f5 [2019-11-24 05:25:14,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:25:14,013 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:25:14,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:25:14,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:25:14,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:25:14,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:25:14" (1/1) ... [2019-11-24 05:25:14,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd387dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:14, skipping insertion in model container [2019-11-24 05:25:14,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:25:14" (1/1) ... [2019-11-24 05:25:14,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:25:14,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:25:14,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:25:14,542 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:25:14,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:25:14,730 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:25:14,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:14 WrapperNode [2019-11-24 05:25:14,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:25:14,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:25:14,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:25:14,732 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:25:14,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:14" (1/1) ... [2019-11-24 05:25:14,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:14" (1/1) ... [2019-11-24 05:25:14,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:25:14,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:25:14,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:25:14,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:25:14,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:14" (1/1) ... [2019-11-24 05:25:14,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:14" (1/1) ... [2019-11-24 05:25:14,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:14" (1/1) ... [2019-11-24 05:25:14,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:14" (1/1) ... [2019-11-24 05:25:14,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:14" (1/1) ... [2019-11-24 05:25:14,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:14" (1/1) ... [2019-11-24 05:25:14,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:14" (1/1) ... [2019-11-24 05:25:14,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:25:14,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:25:14,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:25:14,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:25:14,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:14" (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 [2019-11-24 05:25:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:25:15,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:25:15,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:25:15,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:25:19,157 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:25:19,157 INFO L284 CfgBuilder]: Removed 356 assume(true) statements. [2019-11-24 05:25:19,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:25:19 BoogieIcfgContainer [2019-11-24 05:25:19,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:25:19,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:25:19,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:25:19,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:25:19,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:25:14" (1/3) ... [2019-11-24 05:25:19,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5750911d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:25:19, skipping insertion in model container [2019-11-24 05:25:19,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:14" (2/3) ... [2019-11-24 05:25:19,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5750911d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:25:19, skipping insertion in model container [2019-11-24 05:25:19,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:25:19" (3/3) ... [2019-11-24 05:25:19,171 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product64.cil.c [2019-11-24 05:25:19,180 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:25:19,189 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:25:19,201 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:25:19,228 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:25:19,228 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:25:19,228 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:25:19,228 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:25:19,229 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:25:19,229 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:25:19,229 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:25:19,229 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:25:19,241 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:25:19,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:25:19,247 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:25:19,248 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:25:19,249 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:25:19,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:25:19,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1636073503, now seen corresponding path program 1 times [2019-11-24 05:25:19,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:25:19,262 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631326138] [2019-11-24 05:25:19,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:25:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:25:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:25:19,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631326138] [2019-11-24 05:25:19,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:25:19,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:25:19,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038716789] [2019-11-24 05:25:19,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:25:19,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:25:19,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:25:19,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:25:19,663 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2019-11-24 05:25:19,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:25:19,772 INFO L93 Difference]: Finished difference Result 68 states and 105 transitions. [2019-11-24 05:25:19,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:25:19,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:25:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:25:19,785 INFO L225 Difference]: With dead ends: 68 [2019-11-24 05:25:19,785 INFO L226 Difference]: Without dead ends: 40 [2019-11-24 05:25:19,788 INFO L630 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 [2019-11-24 05:25:19,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-24 05:25:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-24 05:25:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-24 05:25:19,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2019-11-24 05:25:19,826 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 8 [2019-11-24 05:25:19,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:25:19,826 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2019-11-24 05:25:19,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:25:19,827 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2019-11-24 05:25:19,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:25:19,828 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:25:19,828 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-24 05:25:19,828 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:25:19,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:25:19,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1119358177, now seen corresponding path program 1 times [2019-11-24 05:25:19,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:25:19,830 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413089289] [2019-11-24 05:25:19,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:25:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:25:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 05:25:20,312 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413089289] [2019-11-24 05:25:20,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:25:20,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:25:20,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208589595] [2019-11-24 05:25:20,314 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:25:20,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:25:20,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:25:20,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:25:20,315 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand 5 states. [2019-11-24 05:25:20,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:25:20,530 INFO L93 Difference]: Finished difference Result 108 states and 146 transitions. [2019-11-24 05:25:20,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:25:20,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-24 05:25:20,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:25:20,532 INFO L225 Difference]: With dead ends: 108 [2019-11-24 05:25:20,532 INFO L226 Difference]: Without dead ends: 55 [2019-11-24 05:25:20,535 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:25:20,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-24 05:25:20,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2019-11-24 05:25:20,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-24 05:25:20,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2019-11-24 05:25:20,552 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 13 [2019-11-24 05:25:20,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:25:20,552 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2019-11-24 05:25:20,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:25:20,552 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2019-11-24 05:25:20,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 05:25:20,553 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:25:20,553 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:25:20,554 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:25:20,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:25:20,554 INFO L82 PathProgramCache]: Analyzing trace with hash 759577654, now seen corresponding path program 1 times [2019-11-24 05:25:20,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:25:20,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184133386] [2019-11-24 05:25:20,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:25:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:25:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:25:21,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184133386] [2019-11-24 05:25:21,032 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515122778] [2019-11-24 05:25:21,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:25:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:25:21,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 53 conjunts are in the unsatisfiable core [2019-11-24 05:25:21,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:25:21,361 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:21,373 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:21,380 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:21,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:21,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:21,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:21,393 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:21,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:21,402 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:21,409 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:21,843 WARN L192 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 72 [2019-11-24 05:25:22,029 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-11-24 05:25:22,048 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:22,055 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:22,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:22,088 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:22,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:22,106 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:22,108 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:22,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:22,129 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:22,132 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:22,142 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:22,159 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:22,159 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:22,160 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,245 WARN L192 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 175 DAG size of output: 111 [2019-11-24 05:25:23,590 WARN L192 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2019-11-24 05:25:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 05:25:23,600 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:25:23,665 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,671 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,673 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,674 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,674 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,681 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,682 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,683 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,689 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,694 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,696 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,699 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,705 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,708 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,780 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,784 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,785 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,786 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,789 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,801 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,804 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,806 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,808 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,814 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,817 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,820 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,828 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,830 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,834 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,841 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,845 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,858 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,861 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,872 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,877 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,883 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,884 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,886 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,891 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,895 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:23,897 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:24,131 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:24,132 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:24,132 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:24,133 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:24,193 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:24,195 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:25:24,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1096078625] [2019-11-24 05:25:24,235 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:25:24,235 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:25:24,240 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:25:24,247 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:25:24,248 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:25:33,806 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:25:35,496 WARN L192 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:25:35,652 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:25:36,424 WARN L192 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 631 DAG size of output: 619 [2019-11-24 05:25:36,965 WARN L192 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 631 DAG size of output: 619 [2019-11-24 05:25:37,471 WARN L192 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 617 [2019-11-24 05:25:37,909 WARN L192 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 618 [2019-11-24 05:25:39,294 WARN L192 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 720 [2019-11-24 05:25:50,582 WARN L192 SmtUtils]: Spent 7.35 s on a formula simplification. DAG size of input: 1179 DAG size of output: 1071 [2019-11-24 05:25:57,959 WARN L192 SmtUtils]: Spent 7.36 s on a formula simplification. DAG size of input: 1179 DAG size of output: 1071 [2019-11-24 05:26:03,994 WARN L192 SmtUtils]: Spent 6.02 s on a formula simplification. DAG size of input: 1047 DAG size of output: 1047 [2019-11-24 05:26:10,762 WARN L192 SmtUtils]: Spent 6.71 s on a formula simplification that was a NOOP. DAG size: 1069 [2019-11-24 05:26:31,045 WARN L192 SmtUtils]: Spent 7.35 s on a formula simplification. DAG size of input: 1072 DAG size of output: 1072